is there any way to advance right from the lesson completed on do you always have to go back to the main page and elect the following lesson. Is there anywhere where you can mark off a lesson as completed but still go back to review if you want to.
The lessons are published in playlists. Therefore, when you watch a lesson to the end, the next lesson in that group ought to play automatically after a break of ten or fifteen seconds.
In response to your second question: when you have watched a video or a portion of a video, a blue/green ribbon ought to appear (as a marker) in the video play bar, and in the thumbnail for that video.