Longeing /ˈlʌndʒɨŋ/ (US English, classical spelling) or lungeing (UK English, informal USA). [Wiki: Longeing}
Alphabet 2015
K is for Kopertox(R)
J is for Jump
I is for Irons
H is for Hay
G is for Green Grass
F is for Feed
E is for Eventing
D is for Dressage
C is for Caesar
B is for Boot
A Is For Appaloosa
Virtual Brush Box 
I just downloaded the Martian myself! Fat Cyclist recommendation. Haven’t had time to start it up yet, it seems like a short one?
I Kindled it, so I don’t have a feel for the length. It is a fast read. Very fun & clever. YMMV.