for now, here's what i'm doing on my bi's:

i do one arm concentration curls, from a sitting position, with my elbow pressed against my inner thigh, near the knee, and my free hand grabs my free knee.
almost like this:


i really only do one routine, as i totally kill my bi's this way.
i warm up with 45lbs x 5 reps
55lbs x 6 reps
65lbs x 6 reps
75lbs x failure (about 4 or 5x)
65lbs x failure (about 8x)
55lbs x failure (about 10+)

then i switch over to reverse curls (two arm) like this:


i only go 60lbs total, since still nursing an old injury, and i avoid going to failure, so for how, this routine is more rehab than growth orientated

finally, i finish my arms with some barbell tricep curls, like this:


these i'm ok with, so i go 90lbs from a standing position, and two sets of 15 or so til failure

this is all i do for arms right now, and the day is also shared with shoulders.

This is abouut all this old bull can do, but you being a youngster, i'm sure you can blast anything i can do

enjoy!

---Roman