Много е лесно... трябва да му дадеш 2-3 съвета и съответно с Opening и Closing Remarks.

Примерно нещо от сорта на:
Hi, Ronnie!
How are you? What's up?
I've just came back from school and now I have some time for you.
I know what you feel, may be now you are a little bit confused, but you will get over it, I'm sure, probably you just need some time to feel yourself there.
Just try to find out are there any students, who are livin' close to you.
You can go to school together, and then to become friends. It's not so difficult, but you have to forget that you are "new" person.
If you don't like this idea, just start a conversation with classmates, talk about sports, or about your favourite subjects, they will share their opinion with you. You don't lose anything, so try!
That's all. Good luck, and then write back to say what happened.
Bye, Ronnie, Greetings from .... (града от който си)
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направо ти го написах