Books and Youtube are great, but you'll find so much material that it's overwhelming. And, not all of it's good. Not a bad start, especially during the winter months...
But, the very best bang for your buck (time and money) is to get with someone who knows the ropes. I don't mean just any old body either. Get someone who's seasoned and has the skill set and temperament to teach. They're not standing on the street corners holding up signs and begging people to come up and ask questions -- you've got to go find them. I'd hit one of the clubs mentioned. Don't be bashful -- all these clubs are going to be open to guests. Sure, there will be the cliques and maybe even snobs. Or hit a local fly shop. Just sniff around until you find the right guys. Be willing to pop for lunch, dinner, whatever and give a little in return for what you'll take.
'Tell me and I forget, teach me and I may remember, involve me and I learn.'
Ben Franklin