As a former blockchain enthusiastic, I would say do spend some time (if you can afford) to play with it as a hobby, but that's pretty much it. There is a limit the "blockchain applications" can achieve. Many successful ones have a similar form of re-interpreting a hash, e.g. CryptoKitty or crypto zombie games and even the now shinny NFT. It can be fun to work on some blockchain projects, as many exercises are like clipping a duck's wings and then figuring out how to coax it into somehow climbing up a tree.
Also the blockchain space is a big echo chamber. There are lots of fallacies that the enthusiasts are blinded to. For instance, there is the illusion of validity, i.e. confusing the correct identification of a problem (e.g. abused of centralised power) with the correctness in a proposed solution (e.g. fully removing trust). But as long as one is aware of these, it's fun.
Probably start by building a smart contract to experience the limitations (and the WTFs). Then probably move on to study ZKP (which probably can have some real-world usage)