How to Print Songs By Genre?

Put the ones you want into a playlist. Set View to List. Sort by Genre. The use the command File > Print > Song Listing, Custom.

It will print as displayed.

I don't know how to use Genre.

It should be in the topbar, but if it isn't, you can right-click the bar, then select genre to make it appear. Then you can select the songs from the desired genre.

Alternatively, you could make a new Smart Playlist (the key shortcut is ctrl + alt + n), then choose "genre", then input your desired criteria. However, all the songs will need to be fairly similar in their listed genres for this to work.