Don't feel bad about not knowing what HTML5 is. No one does. It's a lot of little things being introduced years apart, so it's hard to pin down the benefits.
But when it comes to learning stuff... you don't need to go to school, all you need is the right inspiration! Just find one web technology you want to learn better, like JavaScript, and do online classes or read small books (like eloquent JavaScript). Do this often enough and you'll hit this point of momentum where learning everything else just comes easier.
If you do actually want to learn JS, I can try to give people lesson plans, and maybe even little challenges here and there to keep people motivated. If anyone is actually interested.
