من در اتاقم پشت میز درس میخوانم.

Yes. In Persian, the verb ending already shows the subject.

• می‌خوانم ends in -م, which tells you the subject is I
• So من is often optional

This means both of these can work:

• من در اتاقم پشت میز درس می‌خوانم
• در اتاقم پشت میز درس می‌خوانم

Including من can add emphasis, contrast, or clarity.

اتاقم means my room.

It is made of:

• اتاق = room
• -م = my

So Persian often adds possessive endings directly to the noun instead of using a separate word like my before it.

A few similar examples:

• کتابم = my book
• دوستم = my friend
• خانه‌ام = my house

So اتاقم is literally room-my.

Yes. در here means in / inside.

So:

• در اتاقم = in my room

In formal or standard Persian, در is very normal. In everyday speech, many speakers may use تو instead:

• تو اتاقم = in my room

Both are common, but در feels more standard/written.

Even though it is written پشت میز, it is usually pronounced posht-e miz.

That -e sound is not normally written because Persian usually does not write short vowels. So a learner may not see it, but will hear it.

So:

• written: پشت میز
• pronounced: posht-e miz

This is very common in Persian: the writing often leaves out short vowels that speakers automatically supply.

Literally, پشت میز means behind the desk/table.

But in natural usage, it can often correspond to English at the desk, especially when talking about sitting or studying at a desk.

So depending on context, it may suggest:

• physically behind the desk
• seated at the desk

Also, میز can mean table or desk, depending on context.

Because Persian does not have a separate definite article like English the.

So میز can mean:

• a desk
• the desk
• sometimes just desk in a general sense

Context tells you which one is meant.

If you want to make it explicitly indefinite, you can use یک:

• یک میز = a desk / one desk

But Persian normally does not need a word for the.

Yes, خواندن often means to read, but درس خواندن is a very common expression meaning to study.

Literally, it is something like to read lessons, but in normal English the best translation is usually to study.

So:

• درس = lesson / study material
• درس خواندن = to study

This is an example of a very common Persian pattern: a noun plus a verb acting together as one meaning unit.

The standard spelling is می‌خوانم.

It has three parts:

• می‌ = present/imperfective marker
• خوان = verb stem
• -م = I

It is pronounced roughly mi-khâ-nam.

A few useful notes:

• The خ sound is like kh, not like English k
• In خوان, the و is not pronounced as a separate v/w sound here
• In informal speech, many people say می‌خونم instead of می‌خوانم

So the written form may look longer than the spoken form suggests.

It can mean either one, depending on context.

In Persian, this form often covers both:

• I study
• I am studying

So درس می‌خوانم can mean:

• a general habit: I study
• something happening now: I am studying

Context decides which is intended.

Because Persian normally prefers verb-final word order.

In this sentence, the order is:

• من = subject
• در اتاقم = location
• پشت میز = another location/position phrase
• درس = object / noun in the compound verb
• می‌خوانم = verb

So Persian often puts the main verb at the end, unlike English.

That is one of the most important word-order differences for English speakers.

Yes. They both tell you where the action happens.

• در اتاقم = in my room
• پشت میز = behind/at the desk

So the sentence gives location in two layers:

1. the broader place: in my room
2. the more specific position: at/behind the desk

That kind of stacking is very natural in Persian.

Yes. A very natural spoken version would be:

• تو اتاقم پشت میز درس می‌خونم

Changes:

• در → تو
• می‌خوانم → می‌خونم

Also, many speakers would drop من unless they want emphasis:

• تو اتاقم پشت میز درس می‌خونم

So the original sentence is perfectly good, but it sounds a bit more standard/written than casual conversation.