Welcome Spors!
You'll need to buy some Reg seeds or reverse a Femmed plant for pollen.
Probably the easiest way to get into breeding is just buy regs and wait for a male to show up and don't kill it lol - Wiat for the pollen sacs and then collect the pollen. .. Then kill it!
Clean the cab and start a girl and then hit the breeder forums for timings on when to dust your girls, and how long to let them develope.
I'm still to try my frist cross too, but i have some super awesome genetics to play with!