The best place to expand your knowledge is in the shop, so I would suggest taking an in person class. Here in the US various stores like Rockler or Woodcraft hold in person classes and they have all the machinery and wood on site so its a good way to see what you like without having to buy a bunch of tools. I took a class that was all about hand tools, starting with an axe splitting a chunk of walnut. I found I don't have the patience or time to only use hand tools only. The two day class was fun but for the time I spend, I want results faster so using machines suits me better.
Second suggestion is building shop furniture but using techniques you want to try. Build some cabinets or shelves, build a better and stable workbench for a table saw, etc.
Just like with exploring a new software stack, you need to get hands on with some project to get a feel for if you like it and then create low risk, low cost projects where you can learn both from your mistakes and to see what you like.