Hey guys i'm trying to decide whether or not to get lightroom 4 or not but either way I have NO CLUE how to edit could you guys give me some help please?

Sure, but it kind of differs with every photo. Different lighting, shaded area, color of the car etc. Once you've got the photo you want to edit imported into the program, click develop on the top toolbar. Now you'll see a bar on the right side with a bunch of sliders. Whatever you do, don't overdo anything. I suggest increasing clarity up a bit as a general rule as well as doing noise reduction (you'll find the slider for that if you scroll down a bit). Everything else you just have to play with. Like anything, practice makes perfect. Don't expect to be creating money making photos after a day of using lightroom. It will be intimidating at first but it's really user friendly. Also, note the adjustment brush right above the sliders. Using this you can brush over select parts of the photo and change them while leaving the rest of the photo the same as before. This is how you do color splashes and other stuff like that.(Protip: keep flow at 100%. Accidentally reduced it to 0 once and didn't know wtf was going on for a couple hours lol.)I'm certainly not as experienced as some other people on this site but you can feel free to msg me any questions.

^ thats pretty good help. Trial and error is the best way to learn, just keep playing around with it until you find a style of edit you like

Great thanks a ton guys!!!!!!!