A:Answer Does this computer connect to wireless WiFi? -- Yes, it does. It comes with a wifi adapter already installed inside.
Does this computer play GTA 5? -- Yeah, but not very well. You would probably get by with low or medium settings, but don't expect 60 fps gameplay
Does this computer play minecraft also Farming simulator on high or medium settings? -- Yes, you will be able to play both these games on high settings
Would this computer have any problems? -- I bought, set-up and have been playing games on it for a good 7 months now (I can play Skyrim with graphic enhancing mods pretty well, though I needed to reduce my resolution to get smoother gameplay) without any major issues, so you're good in the technical department. However, if you're looking for a gaming rig, this is not it. The graphics card barely makes the cut for today's games and you're going to need to add another 8 G stick of ram if you want better performance. Other than that, it's a good computer for a good price.
Would this be good for school work? -- Very much yes, but keep in mind that this doesn't come with a dvd/cd drive so you won't be able to install anything that comes on a dvd or cd. You'll need to purchase an external drive for that. Those aren't too expensive if you need one.