This is difficult to answer. I had prior programming experience in SQL92 and C/C++. Therefore I started by opening the source codes of the Point of Sale software that my company uses.
However, there are lots of manuals you can find on net. You may look in http://www.psdn.com. Happy hunting!!
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.