K1P1

I'm thinking I'm going to try out this Purl one more time. I'm loving the results though the Purl is really pretty and stitch is kinda easy. I'm just having trouble with the whole K1P1. I'm so messing it up. My beginning garment is looking very unorganized. I keep forgetting what I last did and then in the end it was a K when I should have been doing a P, so yeah if you know how to knit then you can get an idea of how my garment looks!! AHHH I just need to know how do I tell that I've just did a K instead of a P. Humm I'll keep practicing and put a picture up so the world can see my.....starter. Well I'm going to try to follow this video and see where it gets me.
http://www.wonderhowto.com/how-to/video/how-to-alternate-cable-cast-on-4463/