When you are on the Justin Guitar front page, there is a little looking glass for search. not very big, but it is at the right side of most of the menu options. This is the fastest way I know of to find the practice sessions.
Welcome to the forum! Lots to read around here, so dig in!
You made a good stab at where to ask, but I’ll bet a moderator moves this question to the first lesson below here:
The irony is that if you had found the proper discussion, it has a link to the video. 