While the basics aren't specific to anything in particular it often helps to connect your interest in electronics with something else. In my case I use my electronics knowledge with my ham radio hobby. My son applied the basics that I taught him to car stereo systems. The basics can be fun all by itself too.
I suppose that one thing to have on hand is a VOM (Volt-Ohm-Meter) or better yet, a DVM (Digital VoltMeter). That will enable you to measure voltage, current, resistance and some other things. Look around for electronics training breadboards - an alternative might be to build one yourself.
Networking, in a personal sense, will help you advance quickly. I have access to lots of electronics stuff and pass lots of it on to friends in the area. I do that because others did it for me. There might be clubs or organizations in your area - ham radio, radio control, robotics, etc.
Many of us take advantage of discarded appliances, computers, radios, etc as a source of parts.
Good luck.