Most students attempt to read the entire chapter and take notes at the same time. Instead, break the chapter into smaller sections or topics, and focus on understanding the material. This helps you to not write too much information or copy the text verbatim prior to taking your notes.
Find the main idea after your read a certain section. Summarize the material in your head. This helps you remember the concepts better and you become actively involved in learning the material.
When you copy directly from your textbook, you are less likely to remember the material. Review this material and restate the concepts in your own words; this should become your notes. Notes written in your own words help reinforce the material.
After you have read a few sections of the material, you can write a few notes in the side or bottom margins of your textbook. Write facts, key concepts and succinct explanations in your own words next to the paragraph. Alternatively, paraphrase the important concepts on the page at the bottom of the page. You can also do a combination of both methods.
If you cannot write in your textbook, use a binder to compile your notes from your textbook reading. After reading a few paragraphs, think about what you have read. Then paraphrase briefly the important concepts, include supporting details. Use plenty of space and write in logical order or in an outline format. Review your notes again to reinforce the material learned.
Try not to underline. Although, this method is quick and easy, it is the least helpful. Typically, there is little mental involvement and you may underline more information than you need. If you have to underline, only underline concepts, key terms and important ideas.