Please don't call this a sport. It's a hobby.
Best way to learn the ropes? Same as with everything else - learning by doing....
Since you're posting in the onroad section, I assume you want onroad. Search around for a good deal on something that's not too expensive - a 1/10 HPI or Traxxas RTR or whatever, then just go for it and have fun. And that's what it's all about.....
-Team Associated RC8.2, RC8T CE, & SC8 with 1.) Argus A52/0801, 2.) RB Fire 11/2058 or 053, 3.) RB Blast V9/2045, 4.) Nosram RS.30RR/JP-4, & 5.) modded Nosram RS.21RR/086
-LST2 #1 with Losi 454 & LST2 #2 with Dynamite Big Red .28
-Ofna DM-1 with silver Mach 427/2047
-TT MT4 G3