Checking your gauge:
Due to the amount of ribbing in this block it will stretch horizontally. It is important to knit a gauge swatch and adjust needle size as needed to get gauge. Pay special attention to row gauge on this block and make sure the ribbing is blocked open when measuring gauge. This step will take extra time, however it is the only way to be certain your finished square will be the correct size. Here is a link to a page with information about how checking gauge:
Checking your Gauge Information

Long Tail Cast On
This block uses a long tail cast one. Here is a link to video demonstrating this type of cast on:
LONG TAIL CAST ON VIDEO

Knitting Cables
The cross rib stitch pattern uses three different crossed cable stitches that are defined in the stitch glossary of the pattern. All three of the cable stitches in this pattern are variations on basic crossed cables. Here is a link to a video that demonstrates the concept of crossed cables:
CABLES VIDEO

K1 tbl, P1 tbl
This video shows how to K1 tbl and P1tbl: K1TBL AND P1TBL VIDEO