League of Legends (LoL) Question: Jungle

It really depends on what champion you're playing. A really general route is to start at the buff nearest your bot lane (so red buff for blue side, or blue buff for red side), get a leash from your bot laners (they hit the buff to help you clear it), then do wolves and then your other buff. You'll get level 3 with double buffs with this route and basically any jungler can do it. You can do different routes depending on what champion you're playing, but that's a good starting one, especially if you want to be ganking early.

You should gank when enemies are vulnerable (overextended, no wards, Flash is on cooldown) and/or when your allies are strong and can follow you up or enable you. Some champions like Elise and Rammus can gank early and often, while others like Nocturne and Master Yi need to spend more time farming early. Again, kind of a champion specific thing, but you'll get the hang of how much you should be ganking vs farming as you play more. A good rule of thumb is to try not to gank enemies that are more than 1 level higher than you, especially if you don't have your ultimate yet. If you're level 5 and you gank someone who's level 7, you're probably in for a bad time.

If you want to learn to jungle, pick a simple jungler with a decent clear and good ganks like Rammus or Warwick, then play them a bunch until you get a feel for the flow of the early game. Watching better players play these champions (in YouTube videos or streams) can also be helpful if you're not sure what to do.