Good lad. This game is all about patience and stick to one thing at a time. Don't start changing springs, oil, camber, caster and pinions in one go. You'll never know what did what for you.
Set your car up to factory standard as the losi team have done hours of testing to get to that set up, so it will work reasonably at every track. Then its just upto you to fine tune it to your driving.
Don't put the fastest motor in you can find. You need to learn the car before you start going fast. Put the slowest motor in you've got and then you'll be able to go around that corner without tipping. Don't worry if other drivers come past you. You have to look at it this way. When you get used to it and you are keeping up with them, then you can turn around and say "ha ha you didn't leave me this round. I was still with you and I've got a lot slower motor than you" Believe me that will give you more satisfaction.
Its not the speed going from corner to corner. Its the speed in the corner that gets you going around a track quickly.
Talk to the drivers at the track and find out what tyres they are on, and its not the winning its the coming home with nothing broken
Most of all go and enjoy yourself.