so if i get a girlfriend. and then i tried to get close to her and kiss her. after that should i start touch her breast and have sex?im duno how to begin with and the processes
Not all at once the first time you meet her! It's usual for there to be some talking at some stage, too. Really, talking to each other, and doing things together, and the two of you gradually getting to know each other, is the most important thing, and determines whether, and how fast, all the other things happen. There are no definite rules and the two of you have to work things out as you go along.
Don't be worrying about "the process" I agree with Ineligible. The most important thing is that you two get to know each other. "The process" will develop naturally as you go. It's not like cooking--you don't follow a step by step recipe.