I just can't do this, I really don't know how to do, and nobody explains it

especially the second one on Poeguyz's PB, it looks easy but...

please help D:

it depends on what version you play on, it doesn't work on pc and hd... but on gamecube it works.. so if you're on gc/sd it's just like normal superjump, but you go into camera mode, hold first person mode ( the same you hold in normal sj) and then you go out from the camera mode

Only works on GC unfortunately, but it is as simple as enabling camera mode (right on the D-Pad) as you walk off a ledge, then holding the look mode button (Y) and exiting camera mode (B). Sometimes the angle and location are quite precise. It also helps if you enter look mode at least once before attempting the CBSJ, because otherwise it is not activated after exiting camera mode.