THIS aging gamer has been a Kart maniac since '92, baby! I got golds in all the 100cc cups (and 3-star golds in 50cc)on my first try. Honestly MK8 could be the least "cheap" Mario Kart of all time. I also unlocked all the characters and still going for all the parts and Miiverse stamps.
Here's some tips just in case you (or anyone else reading this) need them:
-The start boost works if you press and hold A as soon as the "2" becomes transparent. -When you're in the lead, hold L/ZL when you have a banana or a shell. It serves as a butt-cover for red shells and other incoming ground projectiles. It doesn't work against unavoidable stuff like blue shells/lighting/bloopers, obviously. -Max out your coin count to 10 as soon as you can and keep it at 10 as much as you can. Keep collecting them, too, they give a tiny speed boost (and you unlock new parts with them!). -Be a dick. Leave bananas and other traps on boosters, item pickups, and other spots opponents are likely to aim for (just remember where you left them or you could the guy who slipped on his own banana peel. Don't be THAT guy). If you pick a heavy character/kart, use your bulk to bump lighter characters out of the way. Try to hit characters in spots where they'll fall off the track. -Nintendo actually kinda dropped the ball on this: you have to hit +/Start on the kart customization screen to see the stats. Learn what they mean. -Also learn the difference between how kart and bikes handle. Some bikes tend to have a really sharp inward turn, but not outward. -"Unbalanced" vehicles with high top speed at the cost of other stats can actually be a big advantage if you know what you're doing. -Light characters with high handling/acceleration is good for beginners or if you're figuring out the tracks for the first time, but heavy characters with high speed in the hands of an expert will crush the competition. Just remember that the heavier a character is, the harsher punishment you get if you screw up. -Learn the tracks. Find out where you can find shortcuts, specifically the less obvious ones where you can use a mushroom to cut past a curve. Use time trial mode to find them on your own, or look up a high-ranking ghost to show them to you. -Try to hug the inner curves, but also consider paths with lots of coins/boosts tend to be on the outer curves. -Sometimes it helps to glide as far as possible, and if you're good enough at it you can use it to cut corners. -When in anti-grav mode, there are bumpers you get a speed boost by running into. You also get the same speed boost by bumping into other racers (but remember they get the same boost too)
Huh, got kinda carried away with the tips there. Anyway, just remember that even with all the tips I gave this game can still take a giant dump on you, especially online. Though the frustration makes it all the more sweeter when thing do go your way!