For me I did a basic course, 2x half days with full day in the middle so two days in all. Gave a chance to talk about what we were shown (only 5 people / group) but the main thing was just to handle some frames and look at what was there.
I believe you can learn just fine from reading and videos and these cover in a few months what it has taken others years to learn. Basically someone spent 10 yrs overcoming problems and can pass that on, better that than I make the same mistakes they did. Being able to 'talk' with dozens or hundreds of people is a great thing to be able to do, you get differing ideas and views rather than just one.
Only thing I would say is you do need to actually handle hives and be in amongst the bees just for an hour or two at least. Well it helped me anyway, what I took from that was.
Being surrounded by bees the course instructor was looking for anyone nervous about it. Luckliy we were all calm and more interested in talking about what we were doing.
Opening a hive involves cracking and crunching noises so good to do it once so you know, and the weight.
Releasing and carefully lifting a frame needs some confidence, learn to do it slowly uder supervision. I was worried about crushing bees so a steady hand is needed, good to try that once or twice.
Carefully replacing a frame is also an art so again doing a couple is good.
Last but not least learning to shoo bees away to replace frames etc to avoid crushing, they will move if you give them a chance.
Doing the practical side is worthwhile so a short course or helping a local keeper for a day is not a bad idea. Frames can be heavy and cumbersome and could have the queen on the one you drop or misalign so helps to know what to expect.