First notebook entry: Introducing myself

good evening guys，I am a collage student.I want to practise my oral english through chatting online with foreigners.So if you can help me，please connect with me，thankyou.

Correction: Good evening guys. I am a college student. I want to practice my oral English by chatting online with foreigners. So if you can help me, please connect with me. Thank you. 

good evening guys，I am a collage student.

Correction: Good evening guys. I am a college student. 

Notes: collage --> college

"College" relates to education while, "Collage" relates to an art technique. 

I want to practise my oral english through chatting online with foreigners.

Correction: I want to practise my oral English by chatting online with foreigners. 

I usually use "practice" for both the noun and the verb, I think that is the U.S spelling. In U.K "practice" is the noun, and "practise" is the verb. So what you have there is right, either way, I think. 

So if you can help me，please connect with me，thankyou.

Correction: So if you can help me, please connect with me. Thank you. 

Notes: Maybe "So if you can help me, please let me know. Thank you." or, "So if you can help me, please contact me. Thank you." would sound a bit more natural though. 

^_^~

First notebook entry: Introducing myself

good evening guys，I am a collage (college) student.I want to practise (practice) my oral english through chatting online with foreigners.So if you can help me，please connect with me，thankyou.

Hello. If you have questions, I can help you. Your sentence construction isn't bad but you need to enhance your skills with the spelling. :)