This way you can outline the material in your textbook for quick review later. The key to this is outlining. Do not attempt to rewrite your textbook because the authors probably can do a better job of that than you. Making a brief outline of the chapter reduces the amount of re-reading you will have to do. If you can look at your outline and the concepts fall into place then you do not have to waste time re-reading sections you already understand.
Many students use a highlighter on their textbook.
In doing this that assumes you are going to re-read that section. You probably would come out better by outlining. When you outline you are using more of your senses in your study efforts. Sometimes reading the material out loud even helps because you are involving even more senses. Take note in lecture.