You're going to do great. Keep the seat low and push with your feet to get the feel of coasting, just like kids learn. Small steps and you'll be riding in no time. Depending on where you live, see if there are community bike groups you can volunteer at - these are great for learning about bike maintenance, and some places will let you build a bike for yourself from donated stuff for your time. Bike shops are pretty much universally supportive too.
For what it's worth, I think you already did the hard part by coming here and expressing interest :)
What's this "radical change" and why haven't you made it happen yet? Like what are you actually doing other than shouting into the void about other people doing the wrong thing? Even if someone reads your post and is like "yeah that's right" what are they actually supposed to do next? What rules are we supposed to break?