The Encyclopedia of Science Fiction by John CluteScience Fiction by David PringleFantasy by James CawthornJewel Hinged Jaw by Samuel R. DelanyLocating Science Fiction by Andrew Milner
Science Fiction and Fantasy Critiques
143 books — 10 voters
The Seven Beauties of Science Fiction by Istvan Csicsery-Ronay Jr.Critical Theory and Science Fiction by Carl Howard FreedmanReading by Starlight by Damien BroderickMicroworlds by Stanisław LemTrillion Year Spree by Brian W. Aldiss
Science Fiction Studies
138 books — 26 voters

The Encyclopedia of Science Fiction by John CluteArchaeologies of the Future by Fredric JamesonCritical Theory and Science Fiction by Carl Howard FreedmanThe Dreams Our Stuff is Made Of by Thomas M. DischThe Seven Beauties of Science Fiction by Istvan Csicsery-Ronay Jr.
Science Fiction Criticism
134 books — 21 voters
The Science Fiction Hall of Fame, Volume One, 1929-1964 by Robert SilverbergDangerous Visions by Harlan EllisonThe Science Fiction Hall of Fame by Ben BovaThe Ascent of Wonder by David G. HartwellThe Science Fiction Hall of Fame by Ben Bova
Best Science Fiction Anthologies
277 books — 94 voters

Dune by Frank HerbertLeviathan Wakes by James S.A. CoreyOn Destiny by Aileen ErinNot Till We Are Lost by Dennis E. TaylorLight Bringer by Pierce Brown
Space Opera
850 books — 1,086 voters
The Things They Carried by Tim O'BrienA Gracious Enemy & After the War Volume Two by Michael G. KramerShōgun by James ClavellThe Sorrow of War by Bảo NinhThe Boy From Block 66 by Limor Regev
Veteran Recommendations
894 books — 455 voters

Dune by Frank HerbertOld Man's War by John ScalziLeviathan Wakes by James S.A. CoreyStarship Troopers by Robert A. HeinleinPandora's Star by Peter F. Hamilton
Excellent Space Opera
1,032 books — 3,679 voters
Ultralearning by Scott H. YoungHow to Take Smart Notes by Sönke AhrensHow to Read a Book by Mortimer J. AdlerThe Talent Code by Daniel CoyleThe ABCs of How We Learn by Daniel L. Schwartz
Advanced Learning Techniques
29 books — 12 voters