Don't completely understand the goal and some of the terms used. "Stored items" could mean anything. URL's to websites? Documents? Web pages (forget that!)? Export "items"?
Basically, storing documents or files of any type in Access tables is a recipe for db bloat and/or corruption in short order. A back end db type like SqlServer, MySql, etc. is a better choice for such objects, but perhaps not a good choice for a pure novice.
Typically, such files are kept in system folders with pointers (file paths) stored in Access tables, and the files are served up by the programs registered for those file types. I think you'd have to elaborate clearly on exactly what the goal is. Simply storing url's doesn't sound like it would achieve the goal, especially since you can't be sure of their permanence. To store actual web pages would require you to capture a lot of html info in folders, so that can't be it either.
The more we hear silence, the more we begin to think about our value in this universe.
Paraphrase of Professor Brian Cox.