Beginner needs help please with knitted slipper sock

How-to Questions
1

I have always wanted to knit socks and thought I would start with slippers I have run into a problem I have learned the basic stitches and under stand some patterns but I am totally lost now.

I am at Gusset and instep Here are the instructions "with RS facing, pu 9 (11,11) sts along inside edge of heel flap (1 st is already on needle)- 10 (12,12) sts. K2 from holder,pm, work in rib pattern across 22 (24,24) sts (from holder), pm, k last 2 sts from holder. Turn, CO 10 (12, 12) for opposite gusset -46 (52,52) sts
How do I purl 9 sts what is inside edge of heel flap. I have the 1 stitch on the needle but how do I put on 9 purl stitches??

this is a kit from Boye Suede slipper soles
Can someone please help
thank you

2

Welcome to Knitting Help!
The “pu 9sts” means to pick up 9sts. This video shows how to do that and this one shows how to pick up along the side of the heel flap.
Maybe this is the pattern and if so, the notes may be helpful.

3

thank you I will try this tonight after work:)