I've bought Helicoils at my local car parts store. They're simple to install. You may want to remove the right side cover so you can really flush any shavings out from the drilling/tapping process without worring about them going into the engine.
ill just cover the area with a custon cut peace of ducttape, so you think this will be pretty simple im 13 and i can do most of the maintanence on my bike well and im well minded with that stuff, should i just folow the instructions? and is it different with aluminum?
Just follow the instructions. I don't know about your bike, but one of the bolt holes on my Yamaha is not a blind hole (blind holes don't go all of the way through, they're the easiest). It goes through to an oil passage. Are any of the bolts significantly longer than others on the cover? It would be difficult to flush chips out of this passage with the cover installed which is why I suggest removing the cover. The passage on my Yamaha is also after the oil filter so any chips left in it will go through the engine. It usually involves draining the transmission oil, draining the coolant, removing the water pump cover, removing the brake pedal, and then a bunch of bolts. During installation, you'll need to rotate the water pump impeller so it lines up with the gear on the crank as you install the cover which is why you remove that cover. A new side cover gasket is inexpensive.