Thanks for the nice words.
To slip the first stitch, just insert the needle into it, as if you're about to work the stitch as you would for that row, but instead of pulling yarn through, just slide it off the left needle, so it's now on the right needle. It's that simple, you're just transfering the stitch from the left needle to the right. (Video on how to slip is on the Abbreviations Explained page, if you need it.)
So, you just slip the first stitch of every row, instead of knitting or purling it. Work the rest of the row normally, including the last stitch. This way, the end stitches only get worked once every two rows, which helps control loose edges, and it gives them a neat, chain-like edge.