Most of the information is still relevant, if basic. Exclusively use 224 midscreen, slide jumps, keep the opponent going towards the corner...with a good update this will be a good guide imo.
During the beta, the b+2 reset was guaranteed even off a standard freeze. When the game released, the reset was still in the game but was no longer guaranteed. Tom saw it still being as a glitch so he called a glitch even though it was a 50-50 now.