Textbooks are dead. Your new arsenal for mastering algebra is these 10 legendary websites.

1. Khan Academy: The undisputed king. The ultimate free library of videos and practice for everything.

2. Desmos: The beautiful, intuitive graphing calculator that makes functions a joy to explore and visualize.

3. WolframAlpha: Not a solver, but a computational 'Genius Brain.' Ask it anything about a math concept.

4. Purplemath: The clear, patient explainer. Perfect for when you need a straightforward, no-nonsense lesson.

5. Paul's Online Math Notes: The college-level deep dive. For when you're ready to go beyond the basics.

6. IXL: The ultimate practice grinder. It offers endless problems to sharpen your skills to a razor's edge.

7. Brilliant.org: The interactive problem-solving dojo. It teaches you how to think, not just what to do.

8. Symbolab: The powerful step-by-step solver. Use it to check your work and understand the process.

9. Desmos Classroom: A collaborative space with amazing, interactive lessons created by teachers.