Guppys breed like rabbits as the males are sex mad lol.
The female have young every month so you soon be over run with fry.
Go to the livebearers section of the forum lots of helpful members.
Welcome to the board.
Guppies usually get around to it fairly quickly. One thing to remember though is that they're live bearers, so they have a gestation period. But anyway, welcome to the forum.