I don’t know eEnglish, but I’'m studying. I need to speak eEnglish infor my work.

minor error in spelling and grammar but really good

I hope aprender rápido to learn fast.

Today is my first day here.

I don’t know english yet, but I’m studying. it. I need to speak english in myat work.

I hope aprender rápido to learn quickly.

Today is my first day here.

It's not the site's first day, but your first day.

I don’t know english, but I’m studing.I need speak english in my work.

I don't know English, but I'm studying it. I need to speak English at my work.

I hope aprender rápido to learn quickly.

First dDay

Titles are written usually in title case, which says that the first and last word, and any other important words in between, should be capitalized.

Today is my first day here.

"my" tells the reader that it is *your* first day

I don’t know eEnglish, but I’m studying. I need to speak eEnglish in my work.

Nice job using the comma.

study turns into studying

busy turns into busying

fly turns into flying

just some examples

Also, language names are capitalized for some reason in English.

I hope aprender rápido to learn quickly.

"aprender" is "to learn" and "rápido" is fast or quick, but "quickly" sounds better