Free: Contests & Raffles.
Cesar Milan probably has plenty of great ideas for you I'm sure the resident dog experts will be along with ideas anytime now....
Biginner: Look up Larry Thurman @ Whyne Country Kennels he is in the Tri-City area His background is in Weims. if any one can help you he can.Taking on a older "free" dog is a good thing and thank you for doing so. However, you are also taking on someone else training or lack there of. Its a uphill battle but it sounds like your headed in the right direction.
Dogs are more apt to become aggressive when theyre chained up all day as opposed to just kenneled. just thought that was interesting.