To clarify, the actual images themselves are not stored in the database, only the path(s). This does allow Zen Cart to use Server software though, to re-size the images same as if you'd uploaded them manually.

When first starting with EP I always recommend to start small, use 4 or 5 Products & Images. Many people get confused about the path to use for their images and starting small plus using the Error log your Hosting Control Panel should/does provide, one can sort out their errors and get things working.