We started visiting nearby different types of colleges in sophomore year, often combined with other family travels. It helps a lot to see a LAC (liberal arts college), large state U, performing arts college, small private college, medium sized private college, etc. My daughter quickly identified the "type" of school she liked, which narrowed her list a great deal. Within the type she liked, we visited about 8 schools. We got heaps of info on potential majors. HINT: visit early (sophomore or junior year), when school is in session and everyone else is not visiting. February of sophomore and juniot year, or March spring break is good, the seniors will not be swamping everything.