Trying to read through text books that are technical documents like the CCENT/CCNA ICND1 100-105 Official Cert Guide by Wendell Odom, can be hard to retain information, especially when you don’t have any experience with it. One resource that was pointed out to me by my Course Mentor is a webinar series by Dr. Stephanie Burns.
Even though the series is aimed at the preparing for the Cisco Exams, the material can be carried over to any course of study.
The video series can be found on The Cisco Learning Network, which is a free signup to gain access to them. Here is a link to the series: https://learningnetwork.cisco.com/community/learning_center/cisco_exam_preparation. The video series is about 3.5 hours, but is broken down into small segments ranging from a 5-15 minutes.