In reply to worfsfeatherduster:
Have a look on the excellent WalkHighlands website.
https://www.walkhighlands.co.uk/
They have walks all over Scotland which range form very gentle 1 or 2km strolls to full days in the mountains. All the walks have a map (though I would suggest checking the appropriate OS map as sometimes the detail on the maps on WalkHighlands is less than I would like), and photos of the walk.
Paper OS maps are still, IMO, pretty much the gold standard. Often the 1:50000 is fine but the greater detail on the 1:25000 is also, at time very useful. OS maps can be access online via Bing maps
https://www.bing.com/maps
One of the options on the drop down box is the OS map(BTW the OS map only shows if you zoom in far enough)
Although the OS are superb Harvey's Maps are also excellent and well worth a look at.
As you have been orienteering I'm guessing you navigation is pretty good and while nothing compares to being out and doing it, Mountain Navigation by Peter Cliff is an excellent book.
Dave