Peter Naulls, he of the Unix porting and other initiatives, has launched his new riscos.info site.
The aim is to provide a comprehensive guide to C programming under RISC OS, with copious personal experience and discussions thrown in.
But that's not all - Peter's also taken over maintenence of lcc for RISC OS, a small, fast ANSI C compiler. This should give novices especially access to an easier to use free compiler that will work on almost any RISC OS machine.
Link: www.riscos.info