hi, i'm a high school senior looking to join a bjj club in college (i have no bjj experience whatsoever), and i was just wondering about what are some of the basic, barest essentials gear needed/recommended? i was thinking at least a rashguard (the club offers no-gi), an athletic supporter+cup, and maybe a mouthpiece? as for the rashguard, what would be a good brand to start out with and where can i find it? i have a very limited budget (preferably anything under $25?) and i don't need anything that's top of the line. also, can anyone explain how the sizing works? i was looking at another thread and one person suggested getting a size larger? i'm also going to join a thai boxing club, and i was wondering if i should invest in Shock Doctor's stainless steel alloy cup? or would a normal cup suffice? http://shockdoctor.com/shop/product.php?productid=16143&cat=348&page=1 many thanks!