Row ends with psso..what is this??
Psso means pass the slipped stitch over the stitch in front of it on the needle.
Psso is not a separate stitch, it's part of a decrease as in slip 1, k1 psso (pass the slipped st over the k1). You can find most knitting terms on the Glossary link at the top of the page.
psso means pass slipped stitch over. What you have to do is that you don't work the stitch on the left needle but slip it to the right needle then work the other stitch on the left needle. After having done so grab the slipped stitch on the right needle and pass it over the one you have just worked. Hope this has helped you