If you aren't interested in downloading OpenBazaar on your desktop you do still have two options! 1) you can browse the marketplace to at least see what is available using openbazaar.com and 2) If you are more comfortable downloading apps on your mobile device you can check out Haven which is a mobile client that runs the OpenBazaar network. Check it out at gethaven.app.
Disclosure: I work for OB1, the company that has been leading the development of the OpenBazaar network and has also built Haven to make it accessible on mobile.