Listmania!
WebObjects Programming
Web Objects for Macintosh (Visual QuickProject Guides)Web Objects for Macintosh (Visual QuickProject Guides) by Joshua Marker
Buy new: £98.73 / Used from: £52.77
A simple, adequate, introductory guide. Pretty pictures for those who need them. Roughly at the same level as the tutorial that comes with the WO box; get the WROX book instead (next).
Professional WebObjects with JavaProfessional WebObjects with Java by Thomas Termini
Buy used from: £3.70
The first half is a very good introduction to WebObjects. In the second half, the authors interests take them into Direct to Web, a side track that is best avoided by the inexperienced.
Practical WebObjects (Expert's Voice in Java)Practical WebObjects (Expert's Voice in Java) by Charles; Mallais, Sacha Hill
Buy new: £22.03 / Used from: £16.54
An advanced guide for experienced WebObjects developers. This is a very good text, loosely corresponding to Apple's Advanced 5 day class.
WebObjects: Web Application Construction KitWebObjects: Web Application Construction Kit by George Ruzek
Buy new: £41.03 / Used from: £3.16
Affectionately known as WOWACK, it would be my top preference for beginners if it wasn't written for WO 4.5 (current release is 5.2). An updated version seem unlikely.
Web Objects Developer's Guide (kaleidoscope (SAMS))Web Objects Developer's Guide (kaleidoscope (SAMS)) by Ravi Mendis
Buy new: £34.72 / Used from: £7.89
Many misprints and errors, and the author's particular focus on SVG, make this unsuitable for beginners. Otherwise it can be quite interesting.
Building WebObjects 5 ApplicationsBuilding WebObjects 5 Applications by Jesse Feiler
Buy new: £16.90 / Used from: £3.96
Effectively just a rewrite of the reference documentation that comes with the system, and so has little to recommend it.
Dynamic HTML: The Definitive Reference: A Comprehensive Resource for HTML, CSS, DOM & JavaScript: The Definitive Reference (Dynamic Html)Dynamic HTML: The Definitive Reference: A Comprehensive Resource for HTML, CSS, DOM & JavaScript: The Definitive Reference (Dynamic Html) by Danny Goodman
Buy new: £17.51 / Used from: £3.44
The definitive reference and guide for HTML. Essential backup.
Cascading Style Sheets: The Definitive GuideCascading Style Sheets: The Definitive Guide by Eric Meyer
Buy new: £25.65 / Used from: £4.99
Essential reference for CSS, should be on your reference shelf.
JavaScript: The Definitive Guide (Definitive Guides)JavaScript: The Definitive Guide (Definitive Guides) by David Flanagan
Buy used from: £5.49
Most WebObjects applications will benefit from a few Javascripts to tidy them up. This is the essential reference.
Thinking in Java (One-Off)Thinking in Java (One-Off) by Bruce Eckel
Buy used from: £9.00
The best book for learning Java that I have yet found. Takes a serious approach, treats Java as a tool for developing applications, not games, and is infused with object oriented thinking.
Object Thinking (DV-Microsoft Professional)Object Thinking (DV-Microsoft Professional) by D. West
Buy new: £21.63 / Used from: £9.12
To date, the best introduction to object orientation that I have found. Thanks, Doug!
Head First Design Patterns (Head First)Head First Design Patterns (Head First) by Eric Freeman
Buy new: £17.76 / Used from: £16.95
If you need a primer on Design Patterns, this is the one. However, the style is very long winded and irritating if you aren't an American teenager.