There is an FAQ.

Would-be cognoscenti can now experience online the full-on multimedia sparkle of the February 2007 IMA presentation on EWA.

The Ewa Manual (pdf | txt) is a complete guide to ewa's installation, configuration and use.

Don't miss the thrilling API documentation.

The Ewa Wiki is the place for user-contributed documentation and bug reports.

If you have questions that aren't addressed by the above, try the mailing list.