Can anyone name a really good bicep workout ( other than push ups )
You said no weights, but that really would be your best bet. If you don't have weights, put water in empty laundry detergent bottles and weigh them. The handles are easy to hold. It's a good substitute until you can save up for something better.
Arm curls, or chin-ups which work both your biceps and your back
Push ups work on your chest not biceps, do some curls or close grip pull ups
Batman is spot on. The best exersize in the world for biceps is curls. However, if you really want to have the illusion of bigger arms, you work your triceps as well.
Have you tried diamond push ups its mainly to target that area in the arms it works
you could star pumping some iron!
Push ups don't work out your biceps.
With no weights, you should take two very sturdy chairs,back to back. Grab the back of each one lift your feet off the ground and push yourself upward. This exercise does wonders for your arms.