امروز کتابخانه خیلی شلوغ است، پس در اتاقم درس میخوانم.

A natural breakdown is:

• امروز = today
• کتابخانه = library
• خیلی = very
• شلوغ = crowded, busy, noisy
• است = is
• پس = so, therefore
• در = in
• اتاقم = my room
• درس می‌خوانم = I study

So the structure is basically:

Today, the library is very crowded, so I study in my room.

A more literal word order would be:

Today library very crowded is, so in my room study I-do.

Because Persian often drops subject pronouns when the verb already shows who the subject is.

In می‌خوانم, the ending -م tells you the subject is I.

So:

• می‌خوانم = I read / I study
• می‌خوانی = you read / you study
• می‌خواند = he/she reads / studies

Because the verb already includes the person, Persian usually does not need من for I unless you want emphasis.

So:

• در اتاقم درس می‌خوانم = I study in my room
• من در اتاقم درس می‌خوانم = I study in my room, with extra emphasis on I

In Persian, the copula است often comes after the adjective or predicate.

So:

• کتابخانه خیلی شلوغ است

literally looks like:

• library very crowded is

This is normal Persian word order.

English says:

• The library is very crowded

Persian prefers:

• The library very crowded is

You will see this pattern all the time:

• هوا سرد است = The weather is cold
• این کتاب خوب است = This book is good

خیلی means very, and شلوغ can mean crowded, busy, or sometimes noisy, depending on context.

So کتابخانه خیلی شلوغ است could mean:

• The library is very crowded
• The library is very busy
• The library is too noisy/busy

In this sentence, the idea is that the library is not a good place to study right now, so crowded or too busy is the best understanding.

Word order:

• خیلی شلوغ = very crowded

Just like:

• خیلی خوب = very good
• خیلی بزرگ = very big

پس means so, therefore, or then.

Here it connects the two ideas:

• The library is crowded.
• So I study in my room.

It often appears near the beginning of the second clause, just like here:

• ..., پس در اتاقم درس می‌خوانم.

That is a very natural placement.

You can think of it as a connector showing result:

• باران می‌بارد، پس بیرون نمی‌روم.
  It is raining, so I am not going out.

Because Persian often adds possessive endings directly to nouns.

• اتاق = room
• اتاقم = my room

The ending -م means my.

Other common possessive endings are:

• -ت = your
• -ش = his/her
• -مان = our
• -تان = your
• -شان = their

Examples:

• کتابم = my book
• دوستت = your friend
• خانه‌شان = their house

So:

• در اتاقم = in my room

Here در means in, so:

• در اتاقم = in my room

Yes, در is the normal preposition for in.

Examples:

• در خانه = in the house
• در کلاس = in class
• در دانشگاه = at/in the university

Sometimes in everyday Persian, especially in speech, people may omit در in some expressions, but for learners, using در is the safest and most standard choice.

So in this sentence, در اتاقم is completely natural.

Yes, خواندن by itself often means to read. But درس خواندن is a very common Persian expression meaning to study.

So:

• خواندن = to read
• درس خواندن = to study

Literally, درس خواندن is something like to read lessons, but in normal English the best translation is simply to study.

That is why:

• درس می‌خوانم = I study

This is an example of a common Persian compound verb, where a noun plus a verb create a meaning that is not always translated word-for-word.

Other examples:

• کار کردن = to work
• صحبت کردن = to talk
• غذا خوردن = to eat food / to eat

That is a very good question, because learners often expect را after something that looks like an object.

In درس می‌خوانم, درس is part of the compound verb درس خواندن. In many Persian compound verbs, the noun part appears without را.

So:

• درس می‌خوانم = I study

not usually:

• درس را می‌خوانم

The version with را would usually sound more like I am reading the lesson or I am reading the school material, not the general idea of studying.

So in this sentence, درس می‌خوانم is correct because it is the normal compound-verb expression for study.

Because Persian does not use articles the same way English does.

Persian has no exact everyday equivalent of the, and it often leaves nouns without any article at all.

So:

• کتابخانه can mean the library or a library, depending on context

In this sentence, English would most naturally say the library, because both speaker and listener probably know which library is meant.

So:

• امروز کتابخانه خیلی شلوغ است
  = Today the library is very crowded

This is very normal in Persian. Learners often have to get used to the fact that article meaning is often understood from context.

Persian is generally an SOV language: subject–object–verb.

In this sentence, the order is:

• امروز = time expression first
• کتابخانه خیلی شلوغ است = first clause
• پس = connector
• در اتاقم = prepositional phrase
• درس می‌خوانم = compound verb at the end

So the final verb of the second clause comes at the end, which is very typical in Persian.

A rough map is:

[time] [subject/topic] [description] [copula], [connector] [place] [object/noun part] [verb]

That is why the sentence feels more like:

Today the library very crowded is, so in my room study I-do.

This is normal Persian structure, not unusual or poetic.

In careful standard writing, it is usually written as:

• می‌خوانم

with a half-space or zero-width non-joiner between می and خوانم.

Many people type it without that half-space:

• میخوانم

and you will definitely see that in informal writing, texting, and even some printed materials.

So:

• می‌خوانم = more standard
• میخوانم = very common in casual typing

A learner should recognize both as the same word.

A helpful pronunciation guide is:

• emruz ketâbkhâne kheyli sholugh ast, pas dar otâgham dars mikhânam

A few notes:

• امروز = emruz
• کتابخانه = ketâbkhâne
• خیلی = kheyli
• شلوغ = sholugh
• است = ast
• اتاقم = otâgham
• می‌خوانم = mikhânam

In natural speech, some sounds may be reduced a bit, and است may sound less formal.

In everyday speech, people often make it a bit more colloquial. A very natural spoken version would be:

• امروز کتابخونه خیلی شلوغه، پس تو اتاقم درس می‌خونم.

Common spoken changes:

• کتابخانه → کتابخونه
• است → ـه
• در often becomes تو in conversation
• می‌خوانم sounds like می‌خونم

So a spoken-style version is:

• emruz ketâbkhune kheyli sholooghe, pas tu otâgham dars mikhoonam

But the original sentence is perfectly good standard Persian, and that is what learners should know first.