"A tree is known by its fruit; a man by his deeds. A good deed is never lost; he who sows courtesy reaps friendship, and he who plants kindness gathers love."
-- St. Basil
by Jeffrey Elkner (with liberal borrowings from the work of Allen Downey,
and Peter Wentworth
An introductory computer programming text book using Python 3.
by Peter Wentworth, Jeffrey Elkner, Allen Downey, and Chris Meyers
An introductory computer science text book using Python.
by Tony R. Kuphaldt
A free series of textbooks on the subjects of electricity and electronics