DH’s grandma gave me an old knitting pattern for a baby sweater and bonnet, and I’m having a bit of trouble deciphering it. Please help!!

First, it says I need 4 oz. of 3 ply yarn…umm…how do I figure out how many yards/metres I need. The gauge is 8.5 st. and 10 rows per inch.

Secondly, here are the instructions for the first and third rows:

1st row: K1. *P1. [B]w.o.n.[/B] K2tog. P1. K1. Repeart from 8 to end of row.

3rd row: K1. * P1. K2tog. [B]w.r.n.[/B] P1.K1. Repeat from * to end of row.

So my problems with this are the w.o.n. and the w.r.n., which I know from the glossary mean “work over needle” and “work round needle”, but how do I do these things? Is one of them just a yarn over? If so, what’s the other one???