I found the best way to run an internet speed test (and use the results for better Wi-Fi)

After a decade of testing PCs, routers, and home networks, I know what causes slow speeds and how to optimize your internet.
SlashGear

Yes, You Can Use A Roku Without Internet – But There's A Catch

Roku devices are quite convenient if you're looking for a wide array of TV shows, movies, and more to watch, and there are many great Roku streaming apps other than Netflix. For the majority of users, ...