Here's the beginning part:
THE FRONT FLAP
Begin at the lower edge. Cast on 30 sts. using No. 10 needles and work in garter-st., inc. 1 st. at both ends of every row until there are 50 sts. on the needle.
Continue without inc. until the work measures 6 inches from the beginning.
And here's my easier translation:
Cast on 30 stitches on size 10 needles. Knit every row. At the end of each row, increase one stitch. Keeping knitting and increasing until you have 50 stitches on your needle. Continue knitting without doing any more increases until the piece measures six inches long.
Hope that helps! If you need more help after working this piece, let us know!