Debate Coach

Here are some things you can do to prepare your team for the debate on the importance of books in the life of modern man:

Brainstorm a list of arguments for and against the motion. What are the benefits of reading books? How can books help us learn, grow, and become better people? What are the challenges of reading books in the modern age? What are some common misconceptions about the importance of books?
Research different books that support your arguments. Read reviews, synopses, and excerpts to get a good understanding of the books you'll be talking about. This will help you make informed arguments and answer questions from the audience.
Practice your delivery. Make sure you can deliver your arguments clearly, concisely, and persuasively. 
Practice in front of a mirror or with friends or family members to get feedback.
Time yourself. The debate will likely have a time limit, so it's important to practice speaking within that time frame. This will help you avoid running out of time or rushing your arguments.
Refute opposing arguments. Anticipate the arguments that the opposing team will make and be prepared to refute them. This will show that you've thought through the issue carefully and that you're not afraid to challenge opposing viewpoints.
Draw in-depth conclusions from the evidence. Don't just state your conclusions; explain how you reached them and why they're valid. This will show that you've thought critically about the issue and that you're not just relying on your own opinion.

By following these tips, you can help your team prepare for a successful debate on the importance of books in the life of modern man.
Here are some additional tips that may be helpful:

Choose a team leader who is organized and efficient. This person will be responsible for scheduling practice sessions, assigning roles, and keeping track of the team's progress.
Encourage teamwork and collaboration. The team should work together to research the topic, brainstorm arguments, and practice their delivery.
Create a positive and supportive environment. The team should feel comfortable sharing their ideas and asking for help.
Don't be afraid to ask for help from a debate coach or other experienced debater. They can provide guidance and feedback that can help the team improve their skills.