Are you still in high school? Ask your school’s guidance councelor. They would know good websites to visit, based on the career you want to have.
If you know what college you want to go to, Google it. Most of their websites have some way to contact an admissions representative.
No, but I wish I knew how to get off them. Think long and hard about which colleges you want to contact you (probably for years and years).
P.S. They usually just give out postcards to mail back to them with your information and interests.
When you take your PSAT, and you fill out the questionaire part they will start sending you information about college based on what you wrote down. Hope I could help.