What are the main ideas in learning at the library choose all the sentences that have the main idea Boys who spend all day playing baseball really should be spending time at the library. Libraries can be places for both learning and fun. Mothers shouldn't force their children to go to the library. Libraries can educate you about any number of topics. When you go to the library, you never know what kind of information you'll find. You may make a new friend or even fall in love in the library.