There is an overwhelming number of resources for homeschoolers in the college admissions process. You could probably spend all four years of high school reading twenty four hours a day and not get through them all. Instead I suggest your best bet is to stay with the following sites
Test Preparation
SAT Question of the Day
ACT Question of the Day
Kahn Academy SAT math
Free Rice
Number2 Free Test Prep
Scholarships and Financial Aid
Free Application For Federal Student Financial Aid, FAFSA
CSS (Profile)
Financial Aid Information
Scholarships: Fast Web
Common Application
Common Application
Homeschool Supplement to the Common Application