Puppy Linux Official Home - Barry Kauler's web site (Puppy Linux originator). Regularly updated CDs available here.
Puppy Linux Forum - John Murga kindly hosts this forum. John has a version of Puppy that fits in a 50MB CD.
Original Puppy Linux Wiki - The original Wikka Wakka Wiki still has useful information but is closed.
- Use puppy as username and linux as password