Rows and stitches, rows and stitches.
One thing I suggest to ANY knitter, if they havn't done it all ready, is to knit up a swatch and carefully examine exactly what the yarn is doing for each type of stitch.
What makes knitting knit? Why do the loops need to go in one direction, and not the other? What happens when you turn the loop around and twist a stitch?
What does a purl in the row below look like? A knit stitch? Where does the yarn want to lay naturally (front or back) when you've knit one or purled the other? If you intentionally drop a stitch, what happens? How do you get it back on the needle the way you want to? For that matter, HOW do you get it back on the needles the way you want to?
Knit a few rows in ribbing... What does it look like? How do the stitches lie? Can you tell by the shape of the stitch in the row below what the next stitch should be?
Try knitting a few rows in seed stitch... What does that look like? Can you tell by the stitch below what the next should be?
The reason why I say this is because if you know how knitting works then you can figure out a bunch about what your next stitches should be. If you know that you should be alternating K and P in a certain order, you can tell by what is happening in the row below what should happen in the row you're in.
Soooo... If you've created row one of K1, P1... when you turn the needles your first stitch should look like a K stitch on the facing side; a V instead of a bump. So you know you should P. Conversely, if you look and you see a V, a bump, a V, a bump (the first stitches of Rows one and two as stated in the pattern) then you should do one more Row 1... Then on with the pattern.
Knowing why knitting does what it does is the most telling and informative road map to what to do next...
Good luck knitting!