Woah! Sounds like you have a lot to learn. For starters before we all add our 2 cents worth, what is your experience like, and what type of spray equipment do you have?

Hate to say it, but have you taken the time to research anything? There are SEVERAL lengthy threads on how to's on painting. From brush, to rattle can, to jobs completed with spray equipment. Have you seen these? They WILL answer many questions you will have. However we are here to assist.