Hi Doug
Welcome to the forum.
Advice on salmon fishing, Hamish is your man for a start, i only ever catch them on trout flies, so I don't bother trying.
The Don has some reasonable beats, if you buy a season ticket (salmon fishing is much better value on a season ticket on the don than the trout is )
Depends where you want to travel to.
Inverurie/kintore would be a good starting point.
Sandy