You have a long time before you need to worry about when she comes in heat. You need to start showing her in some venue, comformation, obedience, field trial, some venue that would show she has traits that are desirable to pass on to the next generation. Having her evaluated by someone experienced in conformation is also recommended, they can tell you if her conformation is within standard and would be desirable for breeding also.
You can't have her hips certified until she is two years old, and in the meantime you need to have her eyes certified by a specialist, her heart certified by a cardiologist, and her elbows need to be xrayed and certified also.
Is her breeder involved in dog sports of some type also? Has she done all the certifications on the sire and dam, as well as generations behind them? Do any of them have titles in some venue? If so, then it would be a good idea for you to talk to her breeder and hopefully they will be willing to work with you so you start learning about everything involved in breeding.
"To my mind, I hold that the more helpless a creature, the more entitled it is to protection by man from the cruelty of man."
"The greatness of a nation and its moral progress can be judged by the way its animals are treated."
Golden Retriever Rescue of North Texas