Scott Hutter made a Wiki about programming the Commodore C64 / 128. On this Wiki you can find articles about: BASIC Reference, GEOS Programming, C64 - 128 Kernal Reference, Redimenisioning Arrays (C64), Unnew, Autorun Programs, Fast SEQ File Reader (C128), Speeding Up The 1541 (C64), Rasters, Modifying the INPUT Question Mark (C64), Memory Transfer Using BASIC ROM (C64), Simple Word Wrap Routine and much more.