When I first started teaching photography (1969) we used the Focal Encyclopedia for Photography as a text. There weren't any textbooks. Then Charles Swedlund wrote one, followed by Henry Horenstein's books for which I wrote accompanying workbooks (see: http://kimmosley.com/workbook/).
The rule for the students was not to have a built-in meter, a telephoto, nor a zoom lens. How 44 years has corrupted me! Now my favorite camera (other than a $10,000 Leica that I don't have) is my iphone. Here's a picture of my grandson with his new camera, taken by my son with his iPhone.