I started with the Dentcraft pro set, if you’re seriously interested in PDR, I think it’s the best set out there $$$ wise and has everything you need to work every panel or dent. https://www.dentcrafttools.com/tool-sets/pro-set-63pc.html This kit will go a long way and start paying itself back easy. If you on a budget, A1, Dentcraft, Ultra, Blem Tools have smaller kits with the essentials to start learning also.