I have books used in lectures and laboratories. I want to share them with friends. Is there a good way to do this?

You can group multiple materials by adding tags to them.

For example, suppose you add a tag such as the following: "This was helpful in _____ lecture." or "A must read for _____ laboratory." Then, anyone can bring up the same list of materials when searching tags.

You can register tags from both the list screen and details screen.