first time

someone i met through another website saying that it will be suit for me recommended me this website on today. i skimed lots of menu on this website. it is suitable for me to learning english. i'm contented with it. from now on, i'll write many notes and i hope i get much feedback from this place

You can say the above like so:

A person I met on a different website recommended Italki to me today and said it is suitable for me.

I skimmed through a lot of menus on this website. I feel it is a good website from which I can learn English. I'm content with it (You can also say "I am satisfied with it."). From now on I'll write a lot of notes here and hope to get plenty of feedback too.

Welcome to Italki ^^ Hope you meet a lot of new people here and improve you English even more! Good luck .

Hi Jaehyun! I'm new too.   :)   

first time

someone i met through another website saying that it will be suit for me recommended me this website on today. i skimed lots of menu on this website.

it is suitable for me to learning english. i'm contented with it. from now on, i'll write many notes and i hope i get much feedback from this place

"Saying" should be past tense in this situation ="said"

"Lots of menu" should be "A lot of menues" because you looked at multiple menus. It's plural.

----------------------- I would say:

My first time

Today, someone I met through another website recommended iTalki, because it would suitable for me.  I skimmed many menus on the website.  I decided it is suitable for helping me learn English. I'm contented with it. From now on, I'll write many notes, and I hope to get as much feedback as possible.

Good job! Your English is so much better than my Korean.