The first that I can recommend you is to use the documentation here.

Of course the docs are not perfect.

You can use this forum to search a certain problem.

Another good resourse is StackOverflow where we have a very active community.

And the good news - Currently a jqGrid book for beginners is prepare.

Not sure when it will be available, but I hope this will be very soon.

We will inform our users here when it will be published.

Kind Regards

I am not experienced in JavaScript, was just a casual user using only "onclick", and similar small tasks,.  Complete novice to JQuery or JGrid.  I am a back end programmer, and can understand the theory of a new language.  But have a hard time understanding JQuery/JQGrid from just looking at the examples and trying to project them to myu needs.  Are there any resources with fundamental materials?  If you can suggest books, please do.