Welcome to this forum on chess 960 for Team Sheffield. We have joined the WCL960 league which will begin around the start of May so Ian (@superdrewe53) suggested a forum for those with less experience of it to dicuss and ask questions etc - a cracking idea.
So starting at the beginning, chess 960 (sometimes named Fischer Random after Bobby's endorsement of it as the future of chess) is so called because there are 960 possible starting positions. The pawns are the same, but all the other pieces are shuffled randomly on the back rank (the same for white and black). There are a couple of rules on piece placement, Kings must be between the 2 rooks and bishops must be on opposite colours.
The point of this of course is to remove opening theory and to play fresh positions. The rules are the same, just use your pawns and pieces better than your opponent! To those new to it, I hope you enjoy and please feel free to post any questions you might have here.