Need help

I need some help deciphering instructions on how to make buttonholes using s double yarnover…

It would help if you typed in the instructions, but a double YO is wrapping the yarn around the needle twice between sts. On the next round you would either knit into the first loop and purl the second one, or purl the first, k the 2nd, or purl the first and p the 2nd tbl.

. . . or on the next row you might drop one of the wraps and work into the one big loop.