Tips on basketball weight training?

I just got done running cross country and training for my marathon. Not only am I a runner, but I am pretty skinny to start with. I have also not played much bball since like 3 or 4 months. Starting in mid January, I will be playing recreational basketball (ok i know its rec but its gunna be hella competetive cuz all the players that got cut from the school team are playing). I have access to dumbells and thats about it, i need to put on some muscle or just get some strength before the season starts. what kind of workouts should i be doing and how often, etc. thanks.