Hello guys, so i decided i will be getting a mountain bike off of craigslist, im having a problem though. I am clueless about bicycles. Which companies do i look for? how many inch wheels? What model? I am a 16 year old kid, 5'8" and 240 pounds (although i am losing) I lost about 10 pounds so far in a few weeks. The reason i am biking is too just bike with friends and have some fun.
TL;DR: How do i pick a bike off of craigslist?
is this a good example?
Edit: or would it be worth it to get a nice bike from Walmart?