Read First Strike next if you want to continue after the Fall of Reach. The Cole Protocol and Contact Harvest are excellent one-shots that can be read whenever. (Contact Harvest is my personal favorite.) Before you read Glasslands, read The Ghost of Onyx because the events lead up to Glasslands, and the remaining two books in the Kilo-Five Trilogy. (To be released.) Halo Evolutions volumes 1 and 2 both contain 7 excellent short stories that tell the stories of many forgotten heroes and/or heroic characters that you may not know about by simply playing the games. They are very memorable, and emotional, and I highly recommend them. Finally, we have the first two books in the three-part Forerunner Saga. (Cryptum and Primordium). They are very well-written stories that vividly describe the events before, and leading up to the activation of the Halo Array, including the Human-Forerunner war, orgins of the flood, as well as explaining some information on the Precursors. There isn't a lot of action scenes in these books, and they are written like histories for the most part. They carry a generally calming, adventurous feeling throughout, with occasional moments of action, suspense, and revelation. However if you don't really care much about what happened over 100,000 years before the events of the games, then they might not be for you. I do still strongly recommend them. Anyway, I hope this helped you make a decision. -Johnjohns2