If all four out of four legs of the ladder are touching the ground,
go get someone to hold the ladder while you climb so that
the ladder doesn’t tip over. Also climb the middle of the ladder
so you don’t tip the ladder over.

If only three out of four legs of the ladder are touching the ground
climb the side of the ladder farthest from the leg that’s not.

If only two out of four legs of the ladder are touching the ground
make sure the two that are touching the ground aren’t
on the same side and then climb the side above the leg that isn’t
touching the ground so that it is.

If only one out of four legs of the ladder is touching the ground
you are on your own.