Tutorials:
directdraw
tile based games (really nice article; a must read!)
clipping
directdraw7 (displaying bitmaps and such)
smoothscrolling tiles
smoothscrolling tiles (easier to understand)
  animation.zip (download it, unzip it, and check it out!)
  colorkeys
  Alpha Blending with vbDABL
  Loading and Displaying a Bitmap

 

directsound
directsound
  playing midi files
  looping playback