As someone who play Modern Arnis, I understand that drills and forms are nothing compare to sparing. In terms of guitar, that would be jamming, right?

The question is, when should I do jamming? I now know the positions of a pentatonic scale (but not the actual notes), and know the open and bar chords for most of the major and minor. Should I learn more before trying to jam?
if you can solo okay with just that, you can go
in fact, i´ve jammed with just knowing the pentatonics and a few licks, no chords

EDIT: that is, back then, now i know much more and jam regularly it´s great!
Keep On Rockin´

Ibanez GRG-270
Roland Cube30X
Zoom G2.1u