Is there an ideal pace for completing the lessons?
By ideal pace I mean a speed of study which will maximize retention, but not lead to burn out. Additionally, perhaps doing too much in a short period will lesson long term retention. Alternatively, moving at too slow of a pace may become discouraging.
6 Answers
That's a good question. I want to finish the courses before I reach 10k, but that's just pride. In terms of retention, I like to go back and redo the recall after a few hours to test my retention.

It has all to do with your ability to retain information. If you do too much you will not retain it. Therefore find a " median" where you can retain the lessons you do,and no more.
Sometimes, doing less and retaining it is better than doing many and retaining just a little, find your level of retention and you will do well!
My suggestion is to do a lesson (one a day). the following day review that lesson and do the next.Continue this until you have finished all fifteen.Then start from one and repeat. Then go to on to the next set. I'm sure others will have different and equally good suggestions. See what works for you.Buena suerte.
I'm pretty sure the lessons are meant to be done one per week.
You've got 20 new vocabulary words, some new concepts, and things to practice. You can't do that well in a day.
Watch the video every day for about a week, and practice the new words. Get great scores on the exercises before you move on. (Not just passing scores, but scores that prove you know the material.)
I think I took about a year to get through them.
Obviously, it will be different for everybody.
If you are doing it because you HAVE to do it... to meet a schedule... then you probably won't learn as much as if you WANT to do it.
Whether you do one lesson a week and take 60 weeks... or two lessons a week and take 30 weeks... as long as you are having fun and are interested, then you are learning.
Find a pace that you enjoy... there is no wrong answer, as long as you continue to have fun while you learn.
Accidental double post.