How Do You Know...?

[Ambjer]

Hi, this is my first post on this website. I just learned how to knit a few weeks ago--mostly through the videos on this website, and I pretty much have the hang of it [I'm a relaly fast learner].
How do you know if you are supposed to turn the knitted work or not?
Like, I'm making a scarf right now, in stocking stitch--so I purl a row, turn the work, knit a row, and so on and so forth.
A friend found a pattern online for a scarf that is really cool that I want to knit for my dad. It is an "illusion scarf" with a skull and snake.
My question is, when I make that scarf, do I turn the work at the end of each row? Also, there are two colors involved [mostly two rows of each color]. The pattern is a chart, so I can't really show it, but here is a little that she wrote out...

Background Section:
Row 1: K across in green
Row 2: P across in green
Row 3: K across in black
Row 4: K across in black


Note: Instead of breaking the yarn at the end of every color repeat, carry the yarn you're not using loosely up one side of the scarf (trust me, you won't be able to see it)

Directions:
CO 31st in black. K 2 rows in black.

Knit background section 3 times, ending with row 4.

Here is also the link to the scarf: http://thestormmoon.blogspot.com/200...f-pattern.html


If anyone could help me out, I'd really appreciate it.
Oh, and I'm not sure if this matters, but I knit continentally [sorry if it's spelled wrong!].

Thanks!