THere are some writer's handbooks out there you can find. Second hand books and bookstores are awesome... also, you can look online for websites that help, but unless you find a really good one, it's really hard to figure out what they're really trying to say--especially if you're foreign and they use slang (poor me T_____T)
A good source is looking at lyrics of songs... old songs do great there because they're about love and emotions... most of the new songs just talk about how "i used to be so poor and lived the harshest life and now i got money, biznatch, pointing a gun to your head, biznatch" (rap) or "leave that hoe and come with me, she not good enough n' I am" (well, something like brittany spears)...
*Don't flame me here, I just dont like rap, but listen to it for the sake of hip hop dancing
*
Old singers like Harry Connick Jr. or the Carpenters or just... oldies in general are a great source of poetry.
"Whenever we are together
I feel ~ time standing still
I only know I love you
And I always will" - Promise me (HCJ, if I remember right)
or
"It had to be you....
It had to be you
I've wandered around
and finally found
the somebody who" - It had to be you (Frank Sanatra, if I remember right)
They often are more about love, but give you an idea of word class, rhythme (sp) and inspiration.
Country music can go there too, if you can stand it.
For grammar, I would suggest your school textbook or the handbooks I spoke of earlier... none of us want to spend money, but if you really want to write, 5-10 dollars for an entire handbook of knowledge, I'd skip a few sodas for it.
Good luck to you