Yay! Got it! So cool. Converted my files to.rtf and they uploaded beautifully. Thanks so much. Your comment about thinking "put my things on the web" really helped me figure out the whole concept.
Now, one more thing. I'm using my Chromebook in my office. I'm in an old restored farmhouse--thick walls--and I'm upstairs and diagonally opposite from the router on the main computer downstairs, so the signal is weak. Talked to a tech guy at a well-known store, and he recommended a NetGear range extender, which seemed like a really good idea. However, I can't get it to connect with my Chromebook and I'm wondering if there's anything you can suggest to help me----again!