i've decided to knit the "big bad baby blanket" from stitch 'n bitch (p. 187 for those with the book). i'm pretty new to knitting, but this seems like something i can do. just a couple questions. it says to hold two strands of yarn throughout the project. i understand what this means, just wondering if there's anything to be careful of when doing this. also, what does this do, just make it thicker? finally, i've never knit on circular needles. anything i should know? TIA 











