1. Is it still worth getting into? What kind of cool things can you do with it?
2. Are there any good or trustworthy guides recommended?
1) It's worth getting into for 3 reasons: emergency communications, learning about some very interesting technical things like how antennas work, networked repeater systems, and there's a social aspect to talking with others on simplex and repeaters. Radio is far more technical than I ever realized and it's a very deep topic.
2) There are some good YouTube channels that can give you a quick overview of what's possible (Ham Radio Crash Course, Ham Radio 2.0) I also have a podcast where I talk about GMRS (similar to ham but very limited) at gmrs.fm
You might be surprised at how interesting radio can be. I was.
There's a market in ham radio for a Bluetooth interface to replace the ancient programming cables and software we all use for both HT's and mobile transceivers.
One radio does this (the VGC VR-N7500), the interface for the entire radio is an app, but the app again is horribly designed. If it were some kind of open protocol, app developers could do some truly interesting things with it.