breeding information on a golden retriver

Question
i just bought a golden retriver,i am wondering how old must she be when i breed her and how often should you breed a dog.

Answer
In an ideal world you wouldn't want to breed a dog at all, you would spay her and save her from unnecessary stress, and potential pain.

She will need to be at least 1 and a half years old, and on her 2nd or 3rd heat cycle.

There is no such thing as how often you should breed a dog, you shouldn't at all. Certainly no more than 2 or 3 times in her lifetime.