brushes? brushless? lipo? im lost

[chris_smith]

hi guys its some time since i raced 1/10th off road, era of the cougar 2 works an the like. any way iv a son now and dug out everything from the attic to get him started, fireblade 2000, trinity matched 1700 batteries, trinity D5 motor etc etc and now i keep seeing reference to brushless motors and lipo batteries. can you guys give me a clue what i need to get racing again? do i need a full new setup or can i use what i have to get started again?? whats the advantages of these brushless and lipo stuff?

cheers
chris