Quoting AttyTJ: “… as the lessons will disappear from the menus if you don’t (after about a month past the lesson plan).“
Regarding “after about a month past the lesson plan,” I think that “about a month” is the longest that any single lesson remains accessible if you don’t favorite it. Only the lessons from the beginning of a month are available for “about a month.” I believe that the lesson from the last Friday of a given month is only accessible for three days (Friday, Saturday and Sunday), then immediately becomes inaccessible when the new lesson month starts on Monday. I guess you need to be there at the end of the month or you don’t get to keep your string of consecutive complete lesson months alive.
Until recently, TAC included a monthly guitar giveaway for which the entry criterion was to complete all the lessons in a month. Now that the monthly TAC parties and guitar giveaways were eliminated, you don’t have to worry about missing your chance at winning a guitar, but I’m on a roll and I want to keep my string of consecutive months alive. If I’m able to complete this month’s lessons, it will mark 50 consecutive months without missing a daily lesson.