I'd really appreciate any help. I don't know much about bikes at all, but my dad would like a bike for Christmas & I don't know exactly what I should be looking for. He weighs probably 350lbs, and he says he's interested in a mountain bike, though I don't think he'd be unhappy to get a comfort bike. He works a ton & is willing to spend up to $300 because he only has time to ride the bike on the weekends, maybe around the neighborhood or on a trail, and he doesn't live around hills. I've read a lot of advice online given to people asking a similar questions, but I'd really appreciate your help. I've basically been looking at craigslist & websites like Walmart, Target, Amazon, Overstock, and Dick's Sporting Goods.
I'm no expert here, so excuse me if I'm using words incorrectly. Should he get an aluminum or steel frame? 36 spoke wheels? 26 inch wheels? I don't understand the front suspension rigid fork thing, but what should I know about that? Anything else?
I'd really hate for him to be excited to get this bike & it end up breaking under his weight after one ride. Thanks!