The Real Spellers website is permanently offline.
If you are interested in SWI (Scientific Word Investigation, or Structured Word Inquiry, depending on who you talk to), in addition to several FaceBook groups, you will find the following sites and books useful:
Websites
ToolBox 2 - the ultimate compendium of SWI knowledge (1 free theme, the rest by subscription) Orthographica - videos made to accompany Spellinars (by subscription) WordWorks Kingston - the website of Dr. Pete Bowers, the worldwide guru for using SWI in the classroom. Books Teaching How the Written Word Works by Peter Bowers Backpocket Words: Sharing the Essence of English Spelling by Gail Portnuff Venable