Learn Hardcore Russian: Мне удобнее читать книгу дома. - It is more convenient for me to read a book at home.

Мне удобнее… literally: “To me it is more convenient…”
Мне = “to me” (dative of я)
There is no explicit subject like “it”; Russian just says “To me is more-convenient to read a book at home.”

You cannot say «Я удобнее читать книгу дома» – that’s ungrammatical.
To express this idea personally, you’d choose another verb, e.g.:

Я предпочитаю читать книгу дома. – I prefer to read the book at home.

But if you keep удобнее, you must use this dative + impersonal pattern: Мне удобнее + infinitive.

What exactly is «удобнее» grammatically? Is it an adjective or an adverb?

Удобнее here is the comparative form of удобно (comfortable / convenient as a state). It functions like an adverb or predicative:

Base adverb/predicative: удобно – it is convenient / comfortably
Comparative: удобнее – more convenient / more comfortably

It does not agree in gender, number, or case with any noun; it just describes a state:

Мне удобно. – It is convenient for me.
Мне удобнее дома. – It is more convenient for me at home.

The adjective form is удобный (convenient, comfortable) and it does agree with nouns:

удобный стул – a comfortable chair
удобная квартира – a convenient/comfortable apartment

In your sentence, we’re not describing a noun; we’re describing a situation (reading at home), so the predicative удобнее is used.

Could I say «Мне более удобно читать книгу дома» instead of «Мне удобнее…»?

Yes, «Мне более удобно читать книгу дома» is grammatically correct and understandable, but in everyday speech «удобнее» is more natural and idiomatic.

Russian usually forms comparatives with -ее / -е:
- удобно → удобнее
- интересно → интереснее
более + adjective/adverb is possible but feels:
- more formal, bookish, or heavy, especially with short/common words like удобно
- more useful with longer or irregular forms: более актуально, более практично

So the best choice in normal conversation is:
Мне удобнее читать книгу дома.

Why is it «читать» and not «читаю»?

In this construction, Russian uses the infinitive after words like удобно / удобно́, удобно́ было, легче, сложнее, приятно, интересно etc.

Pattern:
(Dative) + [state word] + infinitive

Examples:

Мне удобно читать. – It is convenient for me to read.
Ей трудно работать вечером. – It is hard for her to work in the evening.
Нам интересно слушать лекции. – It is interesting for us to listen to lectures.

If you say «Я читаю книгу дома», you are just stating a fact: I am reading the book at home / I read the book at home (generally).

If you want to express preference / convenience, you need that impersonal pattern:
Мне удобнее читать книгу дома. – For me, it is more convenient to read the book at home.

Why is «книгу» in the form книгу and not книга»? What case is that?

Книгу is the accusative singular of книга.

Dictionary form: книга (nominative)
Accusative: книгу

You use the accusative case for the direct object of most verbs, including читать:

Я читаю книгу. – I am reading a book/the book.
Он купил книгу. – He bought a book.

In your sentence:

читать (что?) книгу – to read (what?) a/the book → книгу must be accusative.

What if I want to say “I find it more convenient to read books at home (in general)”?

Two natural options:

Plural, still quite specific:
- Мне удобнее читать книги дома.
  Literally: It is more convenient for me to read books at home.
  → Sounds like books in general, not one particular book.
Very general “reading” without focus on countable books:
- Мне удобнее читать дома.
  Literally: It is more convenient for me to read at home.
  → Context will usually make clear you mean books, texts, etc.

If you keep книгу, you sound like you have a specific book or a specific instance of reading in mind: the book I’m reading / this book / a book in that situation.

Can the word order change? For example, can I say «Дома мне удобнее читать книгу» or «Мне удобнее дома читать книгу»?

Yes, word order in Russian is flexible, and these variants are all possible, with small nuances of emphasis:

Мне удобнее читать книгу дома.
Neutral, standard. Slight natural emphasis on дома at the end.
Дома мне удобнее читать книгу.
Emphasizes дома (“At home it is more convenient for me to read the book”, possibly contrasting with places like the library, café, etc.).
Мне удобнее дома читать книгу.
Slightly stronger focus on дома as the place of reading, but still natural.
Мне дома удобнее читать книгу.
Emphasizes “for me, at home, it is more convenient…” – also okay and common.

All of these are good Russian; context and intonation determine what is highlighted.

Why is it «дома» and not «в доме» or «у дома»? What’s the difference?

These forms have different meanings:

дома
- Means “at home” (your home, in the sense of where you live).
- Not just physically inside a building, but in your own living place.
- Мне удобнее читать книгу дома. – It’s more convenient for me to read the book at home.
в доме
- Literally “in the house / inside the building”
- More physical, not necessarily your home; could be any building.
- в доме is usually followed by a specifier:
  - в этом доме, в старом доме, etc.
у дома
- Means “by the house / near the house” (outside, next to the building).
- Я жду тебя у дома. – I’m waiting for you by your building/house.

In your sentence, the natural meaning is “at home”, so дома is exactly right.

Could I drop «мне» and just say «Удобнее читать книгу дома»?

Yes, in the right context you can omit мне, especially if it’s already clear whose convenience you’re talking about.

Удобнее читать книгу дома.
→ Interpreted as: It’s more convenient (for me / for us / in general) to read the book at home.

However:

If you need to be explicit that it’s specifically convenient for you, keeping мне is better and more natural in isolation:
- Мне удобнее читать книгу дома.

Omitting мне is more likely when you’re continuing a conversation and the “for whom” is already understood.

Is «удобнее» comparing two specific options, like home vs somewhere else?

Yes, удобнее is a comparative, so it implies comparison with some other situation, even if not explicitly stated.

In context, the comparison is usually:

дома (at home) vs где-то ещё (somewhere else – at work, in the library, on the train, etc.)

For example:

В кафе шумно. Мне удобнее читать книгу дома.
– It’s noisy in the café. It’s more convenient for me to read the book at home.

If there is no clear “other option” in context, it can still sound okay, but the listener will normally assume there is some implicit alternative.

How would I express this idea with a more “personal” verb, like “I prefer”?

A natural personal version is:

Я предпочитаю читать книгу дома.
– I prefer to read the book at home.

Difference in nuance:

Мне удобнее читать книгу дома.
– Focus on practical convenience: easier, less trouble, more comfortable for me.
Я предпочитаю читать книгу дома.
– Focus on personal preference: what you like more, not necessarily about practical aspects.

Both can often be used for similar situations, but удобнее sounds more about conditions/comfort; предпочитаю is more about taste/choice.

Why doesn’t «удобнее» agree with «книга» in gender/number?

Because in this sentence удобнее is not an attributive adjective modifying a noun; it’s a predicative form describing a situation:

Удобная книга – a convenient/comfortable book (adjective agreeing with the noun → feminine singular: удобная)
Мне удобно. – It is convenient for me. (no agreement with a noun; just stating a general state)
Мне удобнее читать книгу дома. – It is more convenient for me to read the book at home.

Here, удобнее relates to the entire action “читать книгу дома”, not to книга itself, so there is no gender/number agreement.

What’s the difference between «читать» and «прочитать» in this sentence?

Aspect difference:

читать – imperfective
- Focus on the process or general activity of reading.
- Мне удобнее читать книгу дома.
  → It’s more convenient for me to read the book at home (speaking about reading in general or as an ongoing activity).
прочитать – perfective
- Focus on completion / finishing reading.
- Мне удобнее прочитать книгу дома.
  → It’s more convenient for me to finish reading the book at home (emphasis on the result: reading it all the way through).

Both are possible; choose:

читать if you mean the activity in general,
прочитать if you emphasize completing the whole book.

How would I make this sentence negative: “It’s not convenient for me to read the book at home”?

Two common ways:

Simple negation (no comparison):
- Мне неудобно читать книгу дома.
  → It is not convenient / it’s uncomfortable for me to read the book at home.
Comparative with “less convenient”:
- Мне менее удобно читать книгу дома.
  → It is less convenient for me to read the book at home.

You generally don’t say «мне не удобнее…» unless you are explicitly denying a previously stated “more convenient” claim in a very contrastive way.
The natural default is неудобно (one word).