>>2050428It’s pretty easy to do most of it, it’s a matter of knowing standards and compatibility of those standards. Start with a frame, ask people and they’ll point out what types of parts are compatible so you can search for the right stuff.
Otherwise if you’re going from the frame up, you need some hex wrenches, pliers/wire cutters, whatever tool is for your chosen bottom bracket, a cassette tool for your chosen cassette, and a chain cutting tool at minimum.
Most other stuff you can bullshit, you can knock in headset cups with a hammer and a block of wood, or just the block of wood, it’s just slow and you gotta be sure to keep it aligned as you go.
But otherwise none of it is super hard or mechanically challenging, stuff like hydraulic disc brakes if you have to cut hoses and press barbs and bleed them and such you’ll want to get more involved with that in terms of educating yourself on how, and you’ll want the tools for it.
The difficult part is like, knowing axel standards and differences, headset types, how to set up a derailleur, bottom bracket standards, etc. So you don’t end up buying the wrong parts that aren’t compatible.
Most torque specs are “until it feels firm enough” never “crank it until it can’t move anymore”, that crushes tubes and fatigues metal.
Post a frame or frame set you are looking at and I’ll happily tell you what the standards for it are and what types of parts and tools you’ll need.
Local bike shops can also do part installs for fairly cheap, most items aren’t actually that much shop labor on bikes. Especially for normal shit.
