http://www.tax.ok.gov/oktax/forms/busregpk.pdfFor what it's worth, it's my understanding that Oklahoma does not have one of those "occasional sales" exemption laws. That means all sales of tangible goods require collecting sales tax. The above link takes you to the packet to fill out for small business status. They also offer classes for new businesses to help with tax laws.
I'm glad you asked this question since it made me do a little more research. (From Etsy's guidelines I had assumed I didn't have to collect/report sales tax since I only had a few sales.)
you can go to the web site for more info www.tax.ok.gov
You can also call them to find out about their tax workshops (405) 521-3160
I hope this helps. I will be tring to get into a workshop ASAP!