Rather than spending weeks digging through conflicting information online, we suggest you start with compilation of resources.
Test Registration
SAT Registration
ACT Registration
AP and PSAT : Contact the guidance counselor at your local high school
Free Test Preparation
College Board SAT Prep
Khan Academy SAT
ACT prep videos on YouTube
ACT Test Prep
Scholarships and Financial Aid
Free Application For Federal Student Financial Aid, FAFSA
Financial Aid Information
Scholarships: Fast Web
CSS Profile
College Search and Admissions
College Board Big Future
Common Application
Coalition Application
Niche