AP

🏛️ Official AP website by the College Board

Course descriptions, exam formats, and sample free-response questions

Includes AP Daily Videos and AP Classroom (through your school)

🧠 Free high-quality lessons for many AP subjects

Great for AP Calculus, AP U.S. History, AP Biology, AP Physics, and more

Includes practice problems, videos, and topic-by-topic review

📇 Flashcards and practice sets for nearly every AP subject

Search by specific course like “AP Chemistry Flashcards” or “APUSH Key Terms”

Great for memorizing vocab and concepts

Self-paced lessons, quizzes, and explanations

Good if you like learning by watching + doing
Free trial available; full access is paid

Free access to abundant practice questions

Questions with explanations