Almost everyone who fails to learn programming fails in the first two hours, and usually not because of programming. They fail on installing Python, on a PATH variable, on a virtual environment, on an editor that will not open the right folder. It is a genuinely miserable experience with no reward attached, and a large number of people who would have enjoyed coding never find out because of it. Replit's 100 Days of Code removes that barrier entirely, and that is the single best thing about it.
Everything runs in the browser. You open a page, there is a code editor, you type, it runs. No installation and nothing to configure. On a school Chromebook, a locked down work laptop, or a five year old machine, it just works.
For a beginner that is not a convenience, it is the difference between starting and not starting. The course is a hundred daily lessons, each nominally fifteen minutes, each building a small project, taught by David Morgan. He is the other reason this works. Teaching absolute beginners is a specific skill that has almost nothing to do with programming ability, and he has it.
He is warm, he is funny, he explains things twice in different words without making you feel slow, and he treats confusion as normal rather than as failure. In a hundred day course the thing that matters most is whether people come back tomorrow, and the presenter is most of that. Content spans Python fundamentals and moves through building websites, automation, some data science, small games and some AI flavoured projects. The daily project structure is the right pedagogy for beginners, because finishing something small every day produces the sense of progress that abstract exercises never do.
The community around it helps too, particularly for people who need to see that others are stuck in the same places. Now the honest criticisms. Fifteen minutes a day is a marketing figure. On the early days it is roughly true.
By the middle stretch a beginner who hits a bug, and everyone hits bugs, will spend thirty to sixty minutes, and telling them otherwise sets them up to feel behind when they are in fact doing fine. I would rather a course said twenty to forty minutes honestly than fifteen optimistically. There are also real quality issues in places. Reviewers who have worked through the whole thing consistently report code errors, instructions that are unclear, and a pacing jump around the middle where the difficulty rises faster than the teaching does.
None of it is fatal, but a complete beginner cannot tell the difference between a mistake in the course and a mistake they made, and that distinction matters enormously when you are alone at nine in the evening. Anyone doing this should expect to search for help occasionally and should treat that as normal rather than as evidence they are failing. The biggest structural gap is that it never teaches you to work outside Replit. You finish a hundred days able to write Python and unable to install it, unfamiliar with the terminal, with git, with virtual environments, or with any editor that is not the one in the browser.
That is a real cliff and I have watched people fall off it. The right move is to treat day 101 as learning a local setup, and to do it immediately while momentum is still there. The AI content also feels bolted on rather than designed in, which is understandable given when the course was built and how much Replit itself has changed direction since, but it means the AI portion is the weakest part of an otherwise coherent course. And there is no mentoring, no cohort and no accountability, so the completion rate on a hundred day free commitment is exactly what you would expect.
That is not really the course's fault, but it is worth knowing before you start. My 3.7 is for a free, well taught, genuinely welcoming first course that solves the setup problem better than anything else at this level, marked down for uneven quality, an optimistic time promise, dated AI material, and a hard stop at the edge of the platform. If somebody tells me they want to try coding and have never done it, this is still what I send them, with the warning that it is a beginning rather than a path to a job.