I don't mean to be harsh, but as Sheik's advice suggest's, you're not yet ready to go anywhere, except as an openly naîve beginner. What Forum to post your question in, the difference between an MP and an SP, basic costs, what goes on; all that is so easily gathered here, just by reading the Stickies for newbies—people put a good deal of work into them, just to help folks like you—and by exploring the site to see what the Forums are, and reading a few pages of posts that look intrguing, to see what concerns people, what they encountered and where. Oh, and there is a Search button, to help you dig up what's already been posted; you could try it on "Lexa".
In the better places you'll get good, professional treatment if you walk in and admit you're a first-timer and 'would they please help you along', just as you got advice here and not flames. But there are less salubrious places where you won't have such welcoming time if you don't start doing some of the basic spadework for yourself before asking for help.