this would be a good time to explain 'reading' your knitting. if you look at a stitch and it looks like a V, then on that side of your work it is considered a knit stitch. If you see a bump immediately under the needle, then on that side of the work, it is considered a purl stitch.
Once you understand this, you can memorize this simple pattern. (I'm assuming you cast on an even number of stitches) Look at your first 2 stitches? if they look like V's, you want to knit them and then P2 etc across. if they have bumps, you want to purl them and then K2 etc across.
basically you end up with blocks of knit and pull stitches, 2 stitches wide but 2 rows tall.
I hope that makes sense. Learning to read your knitting will serve you well because if you put down your knitting in the middle of a row, you'll be able to tell exactly where you are and what you need to do.