what happened to the 3d modeling thread?viewtopic.php?f=31&t=1548
(Still alive, just under the coding topic)
Also with C++ here's a great site: http://thenewboston.org/tutorials.php
Also this is a fairly good one as well: http://www.learncpp.com/
Now the maths side of coding. A good site to check out is khan academy (Free videos teaching you stuff) http://www.khanacademy.org/Trigonometry
(For Physics you don't need to do the electricity and on, just the motion would do)
Remember, get a book and write notes. You learn approximately 10% what you hear, 10% what you write. Then go teach a sibling/parent, even if they barely listen it can still help as you learn approximately 80% what you teach.
Also found on khan academy is computer science (Using phython)http://www.khanacademy.org/science/computer-science