Best quad advice I have ever heard as begginner.......Put 1 hand against your hip and leg sitting down. The other hand across you knee. Draw an imaginary line on the side of the leg. So what u have between your hands and the imaginary line is the absolute best spot for injecting quad!!! I always pin under good lighting cause I can usually avoid veins from the get go. Never drawed blood from this method. Sorry i dont have a visual to go wit it.
What I have is a line that is over a foot long. Where exactly did you say is "the absolute best spot"?
There's tons of info out there. There are sites with pictures. They all say/show the same. The pic I posted is as good as any of them. Middle third of vastus lateralis. If you're going to be injecting yourself and doing bodybuilding, you should probably learn a little anatomy.