adopting a mix breed, any info?

[Freedom]

He is a light tan coloring, with dark shepherd features in the face.
the humane society we are adopting has recommended some local one on one trainers, they also urged positive reinforcement. sounds like a plan to me!

I've been looking for prevenitive measures but so far no such luck, any suggestions?

Thanks for the photo! Aw, big Dane look with GDS ears, ha ha haaa. Handsome!

Why are they sending you to a one on one trainer? Does he already have behavior issues?

One on one training costs much more than group classes. In a group setting, your dog is learning to work with you when other dogs and other people are around. You do the same 1 on 1 home work, with no distractions, between sessions. Unless the dog has issues, I encourage group sessions.