I bought 'SAS Navigation & Tracking' handbook - very easy to read and very useful for all sorts of things (incl. basic GPS). Bought it on ebay for £5.
Has tips on tracking too, which proved very useful for me recently when I was following 4WD tracks but needed to know whether they were travelling in the same direction as me. Remembered reading that you can tell by looking at stones - they are pushed away from the direction of travel by the wheels. Book has that sort of stuff in it - great!
------------------
Barry
3AJ Tenere
__________________
Barry
XT600Z 3AJ Tenere (rebuild in progress)
SRX600
|