Good for you Jimmy, stick with it! Your goal of being able to jam with others is a good one.. in that regard, I'd recommend focusing mainly on chords. Scales are great, but they can take a long time to "get under your fingers" as it were, and even longer to feel comfortable enough so that you can improvise a solo in a jam situation without going right off the rails. Chords on the other hand... well, everyone loves a good rhythm player! You'll probably find knowing basic chords the biggest pay off in a jam situation. Keep at it!