Depends on the field and how specialized and regulated it is, but in some cases, the answer’s simply “Youtube”. The trick is, even in fields where it works, you still have to pair it with personal practice and experimentation, it’s not a free ride, you still have to do the work. That’s how your brain actually develops the neural connections into skills, and that’s what makes it so different from mere memorization. Until you actually start to do it, you haven’t really learned anything. People have different learning styles, some people really need the structure of formal college education, and some fields are heavily gatekept (sometimes for good reasons and sometimes not) to require that formalized structure for accreditation, but outside those fields, life’s never been better for people who have the skills for self-directed learning. And if you’re not interested in working in those fields, there’s typically (except in a few specific fields) no law saying you can’t still learn all about them from outside the confines of formally accredited institutions.