Looking at the link I provided, you should see a settings icon on the right side, looks like a gear (circle with bars coming off of it).
In that, you should find the wireless adapter (is it even on).
If it isn’t on, switch to on (at least on my tablet and android, I have to toggle the off/on setting.
Then it is pretty easy, it will detect wireless networks, choose yours, put in your password.
Next addition to my directions. On their youtube video, it looks like that bar on the right slides out of view when not being focused on, move your mouse to the right and it should slide out. Or if it is touch screen, move your finger over that area.