I think Iâm typical for most AGers, who are NOT bike experts, do NOT want to have an entire garage full of tools, and would rather minimize the bike maintenance and have no interest otherwise in tinkering with their bike.
I took the deep dive a few years back to learn to manage most of my road and TT bike, both of which I redid the entire drivetrain, and reinstalled the aerobars/stem combo on the TT bike.
It was kinda fun, but man, sooo time consuming. Made literally every mistake under the sun and more. Saved some money but if you factor in my persona labor time, I probably lost the equivalent of several thousand dollars.
The worst part - even after I learned to do all that (and learned it pretty well due to all the mistakes I had to redo), I rarely had to do it again. So I promptly forgot all the tips and tricks and made things like an aerobar install with internal cable routing easier.
Thought I was all hot stuff getting a derailleur hanger adjustment tool, which worked WONDERFULLY for 2 years - until I cracked the rear frame of my Cervelo P2c, which I found to my chagrin does NOT have an replaceable hangar. You break it, the frame is done. (Repair is $750). So even a basic derailleur-adjustment skill I learned totally backfired due to my noobness. (I did get a new superbike as replacement, which was soooo worth it - actually had the fastest bike split in one of my local races!)
Then I got a new bike - all new DI2 cabling, internal brake cabling, and a whole different set of tricks and tips to learn.
At this point, I say, F-it. The ONLY maintenance I do on my bike is wax the chain and install latex tubes/tires, and clean the bike. Itâs a huge waste of cost and time do try to mess with stuff on modern bikes, especially with all the internal brake cabling, etc.
So donât feel bad OP. You donât need to learn all that. And fortunately, the vast majority of bike repairs are one-time deals, and the regular stuff is very easy. (Lube your chain, etc.)