Yes - the Land Rover manuals are easier to follow. And right from the hoses mouth, so to speak...There is (or was when I had one) a series three forum/club and it was pretty good.
I found that the workshop manuals were much easier to follow and more informative than the Haynes manual - in fact I have the Haynes manual handed down to me from SWMBO's late grandfather on the bookshelf behind me - He had one when they were fairly new, and a cut above my father and his two series 2A's
Fortunately for both of them, they were in their graves before the defenders came on the scene
I've got one of those - and it is brilliant, but a shock when getting into after driving a modern car! And you can only get two hives in the back.I stripped down and rebuilt a Series 111 Lightweight many years ago. An engineering friend helped me with it a bit, especially when I changed the old head to lead-free. Believe me, if I could do it, anyone can, as I'm not that mechanically minded. It was a brilliant vehicle and I wish to this day that I had never sold it!