Hi and welcome!
Yes, in row 2, purl all the sts. In this pattern, that's 3 sts.
To k, p, k into the same stitch, knit as normal but don't drop the stitch off the left needle, swing the right needle tip around so that you can purl into the same loop and then move the tip of the right needle back so that you can knit the same stitch and then drop the stitch off the left needle. This video will make it clearer:
To k, p into a single stitch, just do the first two parts of the video.