You jot something down when you quickly write or draw it. The person in the picture is jotting down some notes.
Juggling is the art of throwing some objects through the air from one hand to another, in a loop. You can juggle with balls, small bean bags, rings, skittles, burning brands, knives or even chainsaws. Juggling is most often seen done at circuses or by street performers. The lady in the picture is juggling with three balls, the more skilled you are the more objects you can juggle at once.