Start with a slip knot on your hook, then chain a foundation row by yarning over and pulling the yarn through the loop repeatedly to the length your pattern needs. Learn the single crochet first — insert the hook into a stitch, yarn over, pull through (two loops on the hook), yarn over again, and pull through both loops — then repeat across the row, turning your work at the end of each row. Once comfortable, learn taller stitches like the double crochet, which works similarly but with an extra yarn-over before inserting the hook, creating taller, faster-growing rows. Keep your tension even by holding the yarn with consistent light pressure through your non-hook hand rather than gripping it tightly. Count your stitches at the end of each row to catch dropped or added stitches early, since crochet unravels easily if you need to fix a mistake, which also makes correcting errors more forgiving than in some other crafts.