Is replacing the spokes on bike wheels something you can learn to do yourself?
I'm a heavy guy and regularly have spokes break on my back wheel. Getting a bicycle repair guy to fix it is a pain in the ass and kind of pricey. Ideally I would like to have a couple of spokes lying around so I could fix the wheel myself.
I'm not a complete idiot with tools but I'm still very much an amateur. Can I learn to do it myself?
Wouldn't a beefier wheel mean that I would have to replace the thingy in the middle with the gears and stuff? Is there a cheap way of doing it?
Yeah, you would need a new hub if you want to increase spoke count. Cost to replace is going to depend on what your current hub is. I've been away from bicycling for a while now but I often found good deals on used parts at local swap meets, ebay, craigslist, etc. The only wheelset I ever built myself was on new old stock 7 spd shimano hubs.