Most of the comments made in that post will apply to training an older dog, or a rescue animal... though you will not, and cannot, know what mental damage has been inflicted on the dog by its previous owners.
If your rescue pet is mentally scarred I would recommend just one brilliant book... The Dog Listener by Jan Fennell, ISBN 0-00-653236-5.
To view the book, first click our DOG BOOKS link in our left-hand margin, next choose Books from the drop-down Search facility... then copy and paste 0-00-653236-5 into the next box, and then click Go.
The section which refers to her rescue Jack Russell, which had lead a terrible life prior to her adopting him, begins on page 60 and is so revealing and remarkably helpful, you really wont want to miss it.
