As have many others, I first learned land navigation from Björn Kjellström's book back in the 1960s. It was more than adequate then, but even with a couple of revisions since my original first edition copy, that text has become a bit dated now. If you look around you will find an overwhelming array of literally hundreds of books on map and compass and land navigation. Few are great, most are not. But in my land nav classes I recommend a couple as the most clearly written and easy to learn from, mirroring my own way of thought and instruction (I have no other specific relationship with either book or author) Both are available on Amazon:
1) The Essential Wilderness Navigator: How to Find Your Way in the Great Outdoors, Second Edition Paperback by David Seidman and Paul Cleveland
2) Ultimate Navigation Manual by Lyle Brotherton
In the final analysis, there is no better instruction or method of learning with confidence than simply getting out there, as we say get “dirt time”. Make mistakes one time, learn from them as you go. Find a "safe" wooded area, perhaps a park or wild forest area with varied trrrain that is surrounded by roads on all sides in case you need to "bail out" of a confused state. Learn to navigate off the map and using your eyes for observation, (more formally called terrain association) with the compass giving general direction within the landscape as you travel. Study the map and look for changes in landscape, either major or subtle. It will tell you all you need to know.