Having the material doesn’t mean you know it unfortunately. You could probably give yourself a PhD level of education yourself with resources publicly available, but you would need to be able to learn on your own, and putting together the curriculum would be a problem since you are starting as a novice at whatever subject it is.
Totally, when I want to learn a new subject in my field I will go find a uni course with a public curriculum and use that to help my studies. It also lets you find books that have ostensibly accurate information
Having the material doesn’t mean you know it unfortunately. You could probably give yourself a PhD level of education yourself with resources publicly available, but you would need to be able to learn on your own, and putting together the curriculum would be a problem since you are starting as a novice at whatever subject it is.
however, the curriculum is also often publicly available
Totally, when I want to learn a new subject in my field I will go find a uni course with a public curriculum and use that to help my studies. It also lets you find books that have ostensibly accurate information