blending a polygon for transparency

OpenGL OpenGL: Basic Coding
1

apparently blending is the best way of archiving transparency on a texture. When doing some research I’ve heard that there isn’t an Open GL function for setting transparency of certain pixels.

I’m, desperately running out of time, please can you post me to a good simple tutorial if you’ve found one.

2

Simply use a RGBA texture, or directly glDrawPixels ?
Not sure I understand your question.

3

Guess he only need to use GL_RGBA setting the appropriate alpha values.