I have a very dark vein on the side of my penis, it is actually like a "branch of veins" left side, near front(towards me) this normal? help?

Probably: If this not a new finding, and no pain or dysfunction accompanies this, there is a very good chance this has no significance affecting your overall health. If you have doubts, take this to a Urologist, and have your penis examined, etc...

Yeah,: pretty much normal. These are all surface veins that don't have a lot of major function. They vary tremendously from individual to individual but I've never heard of any significant occurring from any of them.