Stop watching. Start doing.
Three free tools, each fixing one trap of self-study. No sign-up, and they run in your browser.
Watch and Recall
You've watched hours of lectures. What have you built?
Start a timer when you watch or read. When you stop, you owe the same time building something. No skipping ahead.
Start a session → Read: Why watching isn't learningAI Rubric Code Reviewer
Free courses come with no TA. Nobody grades your code.
Paste your assignment and code, and get a strict, university-style grading prompt for the AI you already use. You get scores on a fixed rubric, the root cause of each mistake, and hints before answers.
Grade my code → Read: Learning by building real projectsSyllabus Reverse-Engineer
Top universities publish their courses. Nobody lines them up for you.
Name a course, like Stanford CS229, or a goal. You get a research prompt that maps each week of the real syllabus to free lectures, readings and problem sets, paced to your hours.
Build my free study plan → Read: A degree-level education from MOOCs