Yes, as Ingrid says, you have all the skills needed to knit! Everything is based off these few skills. You do funky things to those stitches sometimes, but that really is all there is to knitting. There are various decreases that are all based of knitting and purling. For instance you can K2tog (knit 2 together) or ssk (slip slip knit - slip two stitches onto your right needles and then knit them off with your left) or skposs (slip knit pass over slipped stitch - slip one stitch, knit the next then take the slipped stitch off your needle over the knit stitch). One trick to knitting is just follow each row as you go. If you get to a sticky area, then do each single set of directions as you go. But if you just trust the pattern (borrowing that from Ingrid) and do each thing, you will get the ending result.
Oh and don't be intimidated by cables! Cables are just a series of knits and purls done out of order. They are actually fun!