Learn how to say "I guess that" with the forms ~가 보다 and ~나 보다.
And the video's only 8 minutes!
The full live stream was well over 2 hours, but these abridged videos let you review concepts in just minutes so you can quickly start using them.
If you feel you need some more practice, feel free to check out the full live stream. Also practicing by making your own sentences will help solidify these concepts.
Check it out here!