URLs

C Programming tutorials:

• C Tutorial
• The C Book, online C book
  • PDF of above
• printf PDF
• C tutorial
• Modern C

Algorithmic Efficiency:

• https://www.youtube.com/watch?v=cCKOl5li6YM (at least the first third to half)

Pointers:

• http://www.youtube.com/watch?v=5VnDaHBi8dM (an essential, if not critical, watch)