how much rest should i give between each set??? and should i mix bi excercises with tri's, or should i just do all the bi excercises and than do all the tri excercises???
You should either do the bis or tris first, don't mix the excersises. i also think it would be beneficial to do the bis and Tris on separate days as you will be able to put in more intensity into each part.
As far as rest goes 1-2 minutes is good when putting on size, compound like squats and deadlifts need more rest 3-4 min.