Currently Being ModeratedMar 25, 2013 2:44 AM (in response to RJMontoya)
I am seeing the same. Only lesson 2 to 9 are showing.
Perhaps they removed it, because it comes automatically with any new GarageBand installation and it should not be necessary to download it again.
If you still have lesson 1 on one of your macs or in an older backup, restore it to your System Library. The lessons are installed in
/Library/Application Support/GarageBand/Learn to Play/Basic Lessons