Updated 10/21/2013
There are a few sources about ATG Commerce that are available online. However, many of them are outdated. In this blog post, I have included a list of as–yet active (or just still helpful) tutorials, blogs and guides about Oracle ATG Commerce. The list is updated regularly!
Official Documentation:
1. Oracle ATG Web Commerce Documentation
2. Oracle ATG Commerce 10 Implementation Developer Essentials
The page includes recommended training and preparation documentation for the Oracle ATG Commerce 10 Implementation Developer Essentials Exam.
Blogs:
5. Quest 4 ATG
6. ATG
7. Our Own Java: Category ATG
10. ATG Topics
11. ATG Blog
This blog hasn’t been updated since April 2011.
12. Vishnu Bovilla
It has a couple of Oracle ATG Commerce–related posts.
13. Three2tango
The ‘ATG’ category hasn’t been updated since November 2011. The blog does still have some helpful information about Oracle ATG Commerce.
14.Terse Systems
There isn’t a very good navigation bar in this blog. Type ‘ATG’ in the search box to find Oracle ATG Commerce-related posts.
15. Clean Java
This blog includes numerous schemes to explain Oracle ATG Commerce. However, many of them have low resolution.
16. MetaTheory
This blog hasn’t been updated since December 2010 but still includes many good-quality posts about Oracle ATG Commerce.
17. Internet Marketing – Readme Daily
18. ATG technical discussion
19. ATG launch checklist
Forums:
21. Oracle Discussion Forum: Category ATG
Single Documents and Articles:
23. ATG Framework and Component by Pawan Modi
24. Oracle ATG Review
I hope the information provided in this post will be helpful for you. Please, let me know if I missed any good source(s) of information about ATG Commerce by leaving a comment.