This is not an 'in depth' study of the wall, but gives a very good overview to someone like me who has seen the structures and wants to know more. You might then want to read more detail in another publication.
I purchased this copy of the English Heritage Guidebook to Hadrian's Wall as a replacement for my previous one which I had passed on to a friend who was off to "walk the wall" some time ago now. Whilst not being the most fulsome of potted histories to our national monuments and treasures, English Heritage guidebooks do provide a good basic overview of their subject. Built on the orders of Emperor Hadrian after he visited Britain in 122 AD and taking over ten years to complete, the wall stretches for 73 miles or (80 Roman miles) and runs from Bowness to Wallsend in Newcastle and was intended to separate the Romans and Romano-British from the Barbarians. The guidebook features the Roman forts, mile castles, reconstructed buildings and gates along the way, in places such as Corbridge, Chesters, Carlisle, Housesteads and South Shields, with information about manning the wall and general military and civilian life of the era. The inner end-covers contain a map of the area. Unfortunately the guidebook being some 28.5 CM by 21 CM in size is not very backpacker friendly, and might best be read and left in your car. It does however, have a good map, and has about as much information as a 60 page guidebook can hold. It is a worthwhile purchase and compliments other literature about the Wall.
Published by English Heritage as a revised reprint in 2014. 60 pages.