Want to get in decent shape for martial arts club

[MikeyPatriot]

First, I'd like to commend kyleb for the general tone and attitude of this forum.

So, the university in town (Indiana U) is a great resource for townies like me. There's a Brazillian Jiu Jitsu club that runs out of the school's gym/school of health. It's ridiculously cheap (so much that even if it ends up being useless, I'm paying less than I would at a McDojo) and I'm pretty excited about taking my first martial art.

My only problem is that I'm out of shape. I'm not overweight (5'11", 160), but I have zero cardio and I've been really flaky with my gym membership. So, my plan is to take a couple/few weeks (which started yesterday) and get myself into decent shape so I'm not gassing out immediately after being put into a triangle choke.

So. How much and what kind of strength training should I be doing? Should I be running/biking every day? Is 2 or 3 weeks enough time to get me into decent enough shape?