ask around your neighbors and coworkers for training facility recommendations. Venus and Otto were both at or under 10 weeks when they started. Being a german shepherd, she'll probably get a pass for being more mature at 10 weeks than other breeds at 3 months.
For now, don't worry about training. Worry about potty and teaching her bite inhibition - they learn a lot about social hierarchy and test their limits at the age she's at now. Usually they're still with their litter learning this stuff.
Venus of Crooked Creek 1/26/13
Otto von Hena-C 05/23/08
Morgan Donnermond 08/04/01 to 9/28/12 Long Live the Queen!
I have duct tape and I am not afraid to use it.