American English Corrections

Nice to Meet You

Yoroshikuonegaisimasu.

Hello Kahori, for someone that has recently started English you're doing well. I'll help you with some corrections, one sentence at a time.

For the title, everything is fine. A title sometimes puts a capital on every new word (example below), but italki can be a little informal and relaxed so it is okay. 

Nice to meet you.

The opening just needs a space between the "." and "I'm".

Hi. I'm Kahori. 

For your main sentence, there are a few things that can be done. For the first half of the sentence, you could say "I'm studying English and just started this month..." or "I just started studying English this month...". For the second half "...because I want to speak with people in other countries." 

I studying English just start to this month because I want to taking with any people in other country.

I'm studying English and just started this month because I want to speak with people in other countries.

I just started studying English this month because I want to speak with people in other countries.

I hope this helps.