I have version 1.4 and would like to buy a user guide. I will be upgrading in steps after I move to a new site (Yes, godaddy's restrictions are too restrictive).
Nopcommerce started as an experiment and seems to be working pretty good. So, it's time I bought the user guide.
Do I need to buy the 1.4 version first, then buy each version in succession? Or, can I just buy the 1.7 and that will pretty much tell me what I need to know for transferring my 1.4 site and upgrading step by step to 1.7? Thanks!
The user guides won't help much or at all with upgrading. You have to use the SQL upgrade scripts supplied with NopCommerce, and if you have any issues your best place for help is right here. So, as Andrei says, just buy the guide for the version you're upgrading to (or wait a few days and buy it for version 1.9).