I wanted to post my experience in case anyone else has some of the difficulties I did. Here are some troubleshooting tips:
In Connect a Google web app to the spreadsheet, the first part ("Tools->Script editor") brought up an error message.
I figured I would try on FireFox since Chrome has been blocking a lot of my content and I can't figure out why (probably conflict with privacy/ad block extension). It seemed to work there. So I continued on. The rest of this section seemed fine with one adjustment. Number 4 (Finally, press "Deploy".) I think should be "Update" now.
So far, so good. I concatenate the URL as described in Display your Wordcloud section. I paste it into the browser and....
Loading screen of death. It just stuck here. I tried moving back over to Chrome, but it did the same thing with the additional text box asking if I wanted to Translate from Norwegian. After playing around with the URL for a while, I found there was an unneeded space. After deleting that, it seemed to bring up the test Workcloud.
I embedded it into the page, and the same error seemed to have occurred. I figured there was probably another space or other syntax error somewhere, but I'm not great at finding them. I just used an embed generator to spit out the correct code. This seemed to work fine. I'm hoping the extra code it added won't cause any problems down the line.
(style="border:0px #ffffff none;" name="myiFrame" scrolling="no" frameborder="1" marginheight="0px" marginwidth="0px" height="400px" width="600px" allowfullscreen></iframe>)
Hopefully that will help anyone else that runs into some of these issues!