Let the fun begin

Hello Brainstrust,

Been a long time audio/music lover since I was a kid thanks to my dad and his love of music.
My first taste of Hifi was from a 1976 Joergen amplifier, turntable, tuner and a Teac tape deck running into Joergen speakers, I think it was that combo that kicked off the bug.
Fast forward 50 years (ouch) and the passion has not dwindled, my current set up has been through many iterations and plenty of poor decisions and wasted money although I'm not alone that journey in sure.
So why am I here, well I've decided that I want to put together a small second system and given that I now have more free time, I'm keen to explore the world of diyaudio so that I can not only appreciate the end result, but take some pride in the fact that I built it myself (even though I'm leveraging somebody else's design and skill) but that will help me learn along the way and keep the brain engaged.
What do I want to build.... Everything.
I have been scouring the interweb and YT looking at various designs and options but have arrived at the point of decision paralysis.
I started with tube amp kits, then rPi options and also SS kits, I feel the pi option is quick and easy and the results are quite good, so I might go down that route for streaming (can also integrate the dac with this option).
Speakers are the tricky one from my perspective as designing crossovers will be a completely new science and learning curve.
My background is electrical and Instrumentation trades, so pretty comfortable with the technical and build side of things, just need to smarten myself up in the electronics world.
Anyway enough waffle from me, I came here to learn and seek advice from the diy experts and have some fun along the way, I look forward to interacting with you in this forum.

Cheers

Jason