YouTube is a good resource to learn on how to maintain and repair your bicycle.
Bicycles do require some specialized tools so check to see prices for tools versus bicycle shop services in your area (most things can be done with standard tools though).
Safety first, lights (to see and be seen) and helmet are smart investments.
Other than that, store your bicycles somewhere safe and use a good quality locks.
If your main purpose is gaming you may want to try one of the gaming oriented distributions (e.g., CachyOS, PikaOS, Nobara, Bazzitte).
But Fedora Workstation or the KDE spinoff are fine as well. It's a great general purpose operating system to learn the fundamentals on (e.g., file systems, file permissions, bash scripting, package manager and so on).