There are many ways to prepare for your Ham Radio Exam. Many test teams, including this team, recommend setting up an account with Hamstudy.org. It’s a free account and it will keep track of your results, it will focus in areas you need more help in and not repeat questions you already know.
There are many Gordon West book available at Gordon West Radio school.
In my in-person classes I use this technician band plan from the ARRL. This PDF explain frequencies and power of the technician licensee.
Another great resource is ARRL learn website. Here you will find video’s in every area of the test. Combining both will enable great success!
Enjoy the journey! Let me know if you have any questions!