I know that an SBASIC Programming Seminar has been planned, but if you cannot wait, or will be unable to attend, then third party books may be the sensible solution. You are liable to get hundreds of suggestions, so here is the first one.
Microsoft has a free on-line Programming Guide for Visual Basic (VB) at
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vbcon98/html/vb...If you have Word, Excel, Access, or any other of the Office uite products, you will have access to VB. But VB is not necessary to use these tutorials with SBASIC in Sesame.
You can try the tutorial examples in the Program Editor of Sesame with your current Sesame applications. You will have to adapt Sesame's SBASIC functions to the tutorials. But the sub topics that follow can be beneficial. If you start immediately at
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vbcon98/html/vb... then you will be introduced to things like: Code Writing Mechanics, Variables, Constants, Data Types, Arrays, Procedures, Functions, Control Structures like loops, and conditional (IF-ELSE-THEN) branching.
Any third-party book or tutorial you get right now will have to be customized for Sesame, so you will have to be alert about the differences. But you can use the information on these pages as examples just substitute the Sesame equivalents where necessary. You will be surprised at how much is common.
I don't know anything about your timing, but all of these subjects were planned to be covered in the SBASIC Programming course that has been proposed. I was fortunate to attend the first trial of this seminar a few weeks ago. Perhaps the manuals will be made available for sale, separate from the seminar?
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The use of the SBASIC functions is different from learning/understanding programming techniques. Many of the VB functions are common or similar to those in SBASIC. But other commands unique to Sesame, like the LookUp commands will not be found here, or anywhere else. But there are a lot of good examples in Tom Marcellus
Q&A Version 4 Bible. (This is out of print but I do have a copy available for sale from one of the members of our local Q&A Users Group).
There are also many good examples in Inside Sesame and in the back issues of Quick Answer.