npub18cc2mvu7uqj6fszrq7ud4m5k3v0fj83kx4tf2awpcftn59munn2s0m2f3q (npub18cc…2f3q) I think GA might have been backwards… or… still is? lol
I love Khan Academy! I use it to brush up on topic of interest from time to time… smart idea to jump into Physics over there, too. :)