In reply to yorkshire_lad2:
Edinburgh Bicycle Cooperative do several different courses/classes for different sets of skills, from total beginner stuff to wheel building sessions. They're really good, got several mates who've done them in different branches. There are branches in Newcastle and Leeds, check here for what classes they offer:
https://www.edinburghbicycle.com/classes.html
and here's the link for dates / availability:
https://www.edinburghbicycle.com/info/cycle-maintenance-and-wheel-building-...
I taught myself a lot of stuff from Lennard Zinn's "Zinn & the Art of Bike Maintenance" – coupled with some youtube videos to see it being done, I found I could get my head around what's needed at each stage from his very precise descriptions, and so long as any bolts are greased and you don't over-torque anything it's possible to undo-it-and-have-another-go – few things are a one-way street, you can back up and try again... But yeah, a class means you have a chance to learn without having to get any new tools – chain whip, bottom-bracket tools, crank puller, cassette lock-ring etc.
Post edited at 11:25