Хоть правило и кажется скучным, без хорошего правописания трудно писать понятно.

This is a very common Russian concessive pattern. It means something like:

• although
• even though
• while it may be true that

So Хоть правило и кажется скучным... means Although the rule seems boring...

A few notes:

• хоть here does not mean at least
• the и is part of this pattern and helps mark the concession
• this structure is a little more expressive than a plain хотя

You could compare:

• Хотя правило кажется скучным... = Although the rule seems boring...
• Хоть правило и кажется скучным... = Even though the rule may seem boring...

They are close in meaning, but хоть ... и ... often sounds a bit more conversational or emphatic.

The и belongs to the concessive construction хоть ... и ...

So the sentence is built like this:

• Хоть = even though / although
• правило = the rule
• и кажется скучным = seems boring

In English, there is no direct equivalent of this extra и, so it can feel strange. But in Russian it is normal in this pattern.

You will often see similar examples:

• Хоть он и устал, он продолжал работать.
  Even though he was tired, he kept working.

• Хоть книга и длинная, она интересная.
  Although the book is long, it is interesting.

So here, и is not simply and. It is part of the grammar of concession.

Because the verb казаться usually takes the thing that someone or something seems to be in the instrumental case.

So:

• правило кажется скучным = the rule seems boring

Compare:

• Он кажется умным. = He seems smart.
• Она казалась счастливой. = She seemed happy.
• Это кажется странным. = This seems strange.

This is one of those patterns you just have to learn with the verb.

So here:

• правило = subject, nominative
• кажется = seems
• скучным = boring, instrumental because it goes with казаться

Not in this exact structure.

With казаться, when you describe the subject with an adjective, Russian normally uses the instrumental adjective:

• правило кажется скучным

Using скучно would change the structure and would not fit naturally here.

Why?

• скучным is an adjective agreeing with правило
• скучно is usually an adverb or predicative word meaning boring in an impersonal sense

Compare:

• Мне скучно. = I am bored.
• Здесь скучно. = It is boring here.
• Правило кажется скучным. = The rule seems boring.

So скучным is the correct form because it describes правило through кажется.

Because the preposition без always requires the genitive.

So:

• без = without
• правописание → правописания in the genitive
• хорошее → хорошего to agree with it

That gives:

• без хорошего правописания = without good spelling

More examples:

• без воды = without water
• без друга = without a friend
• без хорошей подготовки = without good preparation

This is a standard case rule:
без + genitive

Правописание means spelling or more broadly orthography.

In this sentence, it refers to writing words correctly according to spelling rules.

So it is about:

• correct letter choice
• correct written forms
• following spelling conventions

It does not mean handwriting.

That distinction is important:

• правописание = spelling / orthography
• почерк = handwriting

So без хорошего правописания means without good spelling, not without neat handwriting.

Russian often uses impersonal constructions where English uses it is ...

Here:

• трудно = difficult / hard
• писать = to write
• понятно = clearly / understandably

Literally, the structure is something like:

• Without good spelling, [it is] hard to write understandably.

But Russian does not need a dummy subject like English it.

This is very common:

• Трудно понять. = It is hard to understand.
• Легко забыть. = It is easy to forget.
• Невозможно объяснить. = It is impossible to explain.

So трудно писать понятно is a natural Russian impersonal structure.

They do different jobs.

• трудно is the main predicative word: it is difficult
• понятно describes how one writes: clearly / understandably

So the structure is:

• трудно = it is hard
• писать = to write
• понятно = in a clear / understandable way

In smoother English, that becomes:

• it is hard to write clearly
• it is hard to write in a way people can understand

Russian often uses понятно where English would use clearly or understandably.

Because here Russian needs an adverbial/predicative form meaning clearly / understandably, not an adjective agreeing with a noun.

There is no noun after писать for an adjective to modify. You are describing the manner of writing.

So:

• понятно = clearly / understandably
• not an adjective modifying a noun

Compare:

• понятный текст = a clear text
  Here понятный is an adjective.

• писать понятно = to write clearly
  Here понятно describes the action.

So the sentence is about how someone writes, not about a specific clear thing.

Yes, in a sense. The sentence is making a general statement, so no specific subject is named.

Без хорошего правописания трудно писать понятно means something like:

• Without good spelling, it is hard to write clearly
• Without good spelling, one cannot easily write clearly

Russian often leaves out a subject when speaking generally.

English usually inserts:

• it
• or sometimes you
• or one

But Russian does not need that here.

It has two parts:

1. Хоть правило и кажется скучным
   a concessive clause: Although the rule seems boring

2. без хорошего правописания трудно писать понятно
   the main clause: without good spelling, it is hard to write clearly

So the overall structure is:

• concession
  • main point

This means the speaker is saying:

• yes, the rule may seem boring
• but it is still important, because good spelling matters for clear writing

That is why the sentence feels natural and persuasive.

Because the first part is a subordinate concessive clause:

• Хоть правило и кажется скучным, ...

Russian separates that clause from the main clause with a comma.

This is similar to English punctuation in:

• Although the rule seems boring, it is hard to write clearly without good spelling.

So the comma marks the boundary between:

• the although/even though part
• and the main statement

Yes. Russian word order is flexible, although not random.

The given version is very natural:

• Хоть правило и кажется скучным, без хорошего правописания трудно писать понятно.

It first presents the concession, then the main point.

A different order is possible, for example:

• Без хорошего правописания трудно писать понятно, хоть правило и кажется скучным.

This still makes sense, but the emphasis changes slightly. It now starts with the main idea and adds the concession afterward.

You could also hear:

• Писать понятно без хорошего правописания трудно.

This is also grammatical, but it sounds a bit more focused on the action писать понятно.

So the original word order is chosen for natural flow and emphasis, not because other orders are impossible.

By itself, правило simply means rule.

In this sentence, the context suggests an educational rule, probably a spelling or language rule, because the second half talks about правописание.

So a learner should understand it as something like:

• a rule in a textbook
• a spelling rule
• a writing rule

Russian often leaves that more specific category unstated if the context makes it clear.

Often yes, but there is a nuance.

• правописание = spelling / orthography, often a bit more everyday
• орфография = orthography, more technical or academic

So:

• без хорошего правописания sounds very natural here
• без хорошей орфографии is possible, but it sounds more formal and less idiomatic in this exact sentence

A Russian speaker would usually prefer правописание in a general statement like this.