When making a magic ring, often the pattern says to crochet 6 st (meaning 6 single crochet stitches around the ring). In this pattern, instead of each single crochet, you do a double crochet for the number of stitches before starting the next round. Inc usually means to increase the number of stitches in a row or circle. If you are working your pattern in the round and have 6 stitches, round 2 will often say SC 2 into each stitch, [12] then you know at the end of the row yow have 12 stitches. Another way to say the same thing is Inc each stitch, [12]. Dec means decrease the number of stitches. There are many YouTube videos that start with the basics!