Question about Double Strand

Hi
I am very new to knitting. I have come across a pattern where I have to use double strand for Cast On. I am not sure what this means. Can somebody help me with this?

Prajakta

Welcome!

To use a double strand, you just use two strands of yarn as if they were one. You can use a strand from each of two balls or use the inside and outside strand from one. Each loop will really consist of two, but after a while, you hardly notice.

Thanks a Lot

Prajakta