Intarsia questions

im having issues…i watched the video, but i still dont understand.

how much yarn do i cut for each section…what qualifies as a section…i just dont understand…i get the actual knitting part of it…its just the beginning…can anyone help give me more complete instructions?

Here’s a brief tutorial that might supplement the video:
http://www.sweaterscapes.com/intars.htm

But the most complete discussion of intarsia I’ve seen is in “The Knitting Experience: Color” by Sally Melville. It covers your questions (and much more), and is one of the very few references that clarifies the mysterious process of “twisting” two colors of yarn by describing it more accurately as “crossing” the yarns.