Can anyone tell me where to start on all of this as a self-taught beginner? I feel like I follow tutorials well and get basic apps up and running via tutorials.

Can anyone tell me where to start on all of this as a self-taught beginner? I feel like I follow tutorials well and get basic apps up and running via tutorials. I've even built some basic tools in use by a handful of people at my job with Node and Meteor. But the minute I try to dive into React and some of these more professional tools in the ecosystem, I find myself totally lost.