June 23-July 7 (while kid has no camps):
try to complete all Codecademy modules. Starting in the middle, with Python (13 hours, they say), then back to the beginning with HTML and all their other modules.
July 14 - Aug 1 (while kid is in camp): work through the MIT Open Courseware three-week module on Intro to Programming with Python,
which based on the textbook How to Think Like a Computer Scientist:
Do-able? Don't know. But it's a plan...
:)