My first sentence.

سلام! من امروز دارم مى نویسم امروز

This is my first attempt at writing in Farsi like this. Where does the adverb of time usually go in a Farsi sentence? Thanks!

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موفق باشی دوست من :)

My first sentence.

سلام! من درام مى نوىسم امروز.

This is my first attempt at writing in Farsi like this. Where does the adverb of time usually go in a Farsi sentence? Thanks!

I think what you want to say is: Hello! This is my first attempt at writting (in Persian). If you are trying to say this then you would say it like this: .سلام ! این بار اول من است که فارسی می نویسم

To answer your question regarding where does the adverb of times goes in a Farsi sentence: it goes at the start of a sentence. You may have written it right but if you used Google Translate it can do weired things, like move a word from the start of a sentence to the back of it when you copy and paste. So here is the correct way to write what you wrote: .سلام! امروز من دارم مى نویسم

It is wonderful that you are learning Persian. Good luck with it.

My first sentence.

سلام! من درام مى نوىسم از امروز مي نويسم
This is my first attempt at writing in Farsi like this. Where does the adverb of time usually go in a Farsi sentence? Thanks!

** موفق باشي. ^_^

The adverb of time e.g. today, last year, this month etc. has to be mentioned either at the beginning of the sentence or immediately after the subject. Let's look at your sentence: 

En: I am writing today. 

Fa: 1) من امروز دارم می نویسم

     2) امروز من دارم می نویسم

Good Luck! :)