Informix Documentation Available

I am currently working on a project that uses an Informix Database. It is a scenario where one of the vendors gets a cheap deal on Informix if they don't require documentation. Apparently this also includes the standard man pages. I'm new to Informix. I've used Ingres in the past. My immediate questions revolve around the use of the Informix version of isql (/usr/informix/bin/isql). There's no man page so I don't even know what parameters it can take. In the Ingres version I could pass a username as a parameter that would run the query as the user. I can't get the same parameter (-uuser) to work with this version. Does anyone know of any online resources that I could access? Preferably something I could print and take to work (since they don't even have internet access there). Oh -- This is on SCO Unix. While I'm asking -- What about a good resource for SQL? I don't use it enough to remember all the syntax off the top of my head and end up playing around until I get it right. Thanks! Herschel