Welcome to VStanced, Oliver. Make sure you have already read the rules, also, the Noob Guide, which should help you with SLRR.
If you want to ask about any mod for SLRR, feel free to check this thread.
There are many ENBs in our Download section, go choose the one you like most.
Java is a coding language, that SLRR is made on (but yet not the only one).
To make car more "driftable" use proper suspension set and engine with LSD (or locked differential).
About the engine sounds, our user Mindeliszz made tutorial how to.