Why not give Geocaching a go and your are more than welcome to borrow my GPS device and I can give you a quick tutorial - it is very straightforward. Blairgowrie is perfectly situated to go out geocaching and we have so many around the area - you will find places you never knew existed. If you are going to be walking the Cateran Trail there are lots of geocaches on the trail, all adds an extra dimension to your walk. If you read my blog you will see that I try and do quite a bit of walking and many of the walks I write about involve geocaches and I have also attended a geocaching 'workshop'. Geocaching really does take you to many undiscovered places. Please click the following links for geocaching information in Perthshire.
Registering on the Geocaching website is free and even if geocaching doesn't interest you, do a search for Perthshire, Scotland and you can access a map and you will find out about some great walks. The geocaches left by 'Dair Mor' are generally themed around Big Tree Country.