Mastering the system really is THE best value in bjj. I do more gi than no gi and I still find it worth it and then some.
Beyond that you have options and kind of want to decide if you want online content (mginaction, the menendez bro ect) or a hard copy dvd set (I like Xande, but that's a personal preference. A lot of people swear by Roy Dean. There are tons to teach the basics)
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