The document provides guidelines for selecting and purchasing gaming software for a library collection, including considering popularity, age appropriateness, variety of genres, and game reviews. It recommends focusing on popular genres like action, sports, rhythm and racing games as well as social games like Mario Kart, Guitar Hero, Rock Band, and Wii Sports. The document also touches on rating systems for games and developing a budget and purchasing plan that takes into account library requests, replacements, and new releases while also processing circulated games like DVDs and CDs.