*Looking for a book about practical English ***

Does anybody happen to know a book about practical English writing? I am always feeling panic when I write a formal invitation letter or a sublet contract, since I really have no idea what the formats they should have, and what terms or words I should use. I know how to write them in "Chinese styles" but they are so different.
I think I need some templates to learn practical English writing such as: letter of condolence, letter of invitation, contracts, announcements, notices, certifications, minutes and agendas.

does anybody happen to know something about this kind of books(the book titles or key words of the titles are enough). I can search them on the Amazon.com.
Appreciate your kind helps.