Mobius موبيوس

Beginner

Conceptual Physics Paul Hewitt

Easy

University Physics OpenStax Essential University Physics Richard Wolfson

Medium

University Physics with Modern Physics Young & Freedman Fundamentals of Physics Halliday, Resnick & Walker

Hard

The Feynman Lectures on Physics Feynman, Leighton & Sands

Extreme

Problems in General Physics I. E. Irodov Problem book