Straight answers
Where can I find free official SAT practice?
Bluebook, the College Board's official testing application, includes free full-length official practice tests that mirror the real digital SAT's format, timing, and tools. It's the single most reliable free resource, since it's the same app and question style used on test day.
Bluebook is free to download and use, and the official practice tests inside it are built and scored by the College Board itself — same section structure, same adaptive module design, same on-screen tools (Desmos calculator, reference sheet, annotation) as the real test.
Because the practice tests run in the actual testing app, they're also the best way to get comfortable with the interface itself — how to flag a question, navigate between screens, use the built-in timer, and take the break — separate from the academic content.
We point students to Bluebook rather than trying to recreate official College Board questions ourselves — copying real test content isn't something we do, ever. Instead, our own drills are built around the same skills and format so daily practice and official practice test days reinforce each other.
A reasonable rhythm: use daily short drills to build specific skills, and use an official Bluebook practice test every couple of weeks to check pacing and stamina under real conditions.