[nickpeterson]

The problem with all varients is the incredibly minimal resources to learn them. I wish a skilled practitioner would do something larger than a blog post. Something like a pluralsight/oreilly course...

[srpeck]

There is a lot of material on kdb+ on kx's website (http://code.kx.com/wiki/Tutorials), Q for Mortals (http://code.kx.com/wiki/JB:QforMortals2/contents) being the best introductory book.

Also some good resources in this Quora: https://www.quora.com/What-are-the-best-resources-to-learn-q...

And if your interest is in the k language more than kdb+/q, then I have found the docs in John Earnest's ('RodgerTheGreat) oK interpreter a succinct, example-focused introduction: https://github.com/JohnEarnest/ok/blob/gh-pages/docs/Manual.... Plus using his browser-based REPL (http://johnearnest.github.io/ok/index.html) may lower the barriers to entry, and iKe (http://johnearnest.github.io/ok/ike/ike.html) is great for experimentation...http://johnearnest.github.io/ok/ike/ike.html?gist=9c5f43baa4...

[eggy]

I program in J and there are many books, examples, YouTube videos, a great help file, and several active forums. Just check jsoftware.com.

Rosettacode is also a good source for example J code [1].

The J for C Programmers book is good if you already have programming experience, especially in C [2].

[1] http://rosettacode.org/wiki/Category:J

[2] http://www.jsoftware.com/help/jforc/contents.htm

[eggy]

Also, see this:

http://code.jsoftware.com/wiki/Guides/GettingStartedSerious

[Avshalom]

are you a student and/or can you pretend to be one? http://www.timestored.com/kdb-training/free-student-access

or http://www.dyalog.com/mastering-dyalog-apl.htm and be a student to get a free (educational) dyalog license

[PeCaN]

J has a large number of tutorials ("labs") included in the IDE. They're fun and easy to follow.