Hi @jacs10 ,
The beveling issue is probably because your Object has an uneven Scale. In Object Mode press CTRL+A > Apply > Scale….But that is exactly what that YT video showed, so…hm maybe you can post a link to your .blend file here? (Via Dropbox, Googledrive, or similar)
Otherwise at least add a screenshot of your whole UI…But that will not guarantee that we can see what is causing this…
And don’t worry about asking many questions! We’re happy to help!