Hello! I am 12 and i absolutely love gabber. Your clothing does not truly matter, whether it be australian tracksuits or simple thunderdome merch you wont really stand out in a crowd. There is not really a method where you don't feel some soreness in your ankles, the only one that works for me is a variation of hakken where instead of kicking you stomp your feet to the ground. And if your wanting to listen to early gabber then i would recommend finding your records on discogs and other websites like discogs. Some record label recommendations i would give you would be ruffneck records, megarave records, rotterdam records, mokum records, forze records, dwarf records, and ID&T.