Kitson, Harry D: How to Use Your Mind, v.1, 17 Feb 2008.
A guide to improving study skills, first published in 1921. It makes a number of very useful points in a succinct way.
How to Use Your Mind: A Psychology of Study.
Being a Manual for the Use of Students and Teachers in the Administration of Supervised Study
By Harry D. Kitson, Ph.D.
Professor of Psychology, Indiana University