Step-by-Step Crochet Instructions

Crochet Row Instructions
1st Row: Skip 3 stitches and insert into the 4th stitch, making a double crochet in each stitch.
2nd Row: Chain 1 and turn. Make a single crochet into the 1st stitch and a single crochet into every stitch.
3rd Row: Chain 1 and turn. Make a double crochet in the 1st stitch; make a front post double crochet in the double crochet of the 1st row, then make a double crochet into the next stitch (row 3) and finish by making a double crochet in the last stitch.
4th Row: Chain 1 and turn. Make a single crochet in the 1st stitch and a single crochet into every stitch.
5th Row: Chain 1 and turn. Make a double crochet into the first 2 stitches; make a front post double crochet on the double crochet of the previous row (row 3) and then a double crochet into the next stitch (row 5), finishing with one double crochet into the last 2 stitches.
6th Row: Chain 1 and turn. Make a single crochet in the 1st stitch and a single crochet into every stitch.
Repeat the 3rd to 6th rows as needed.
what is the starting chain for the Alpine crochet pattern ,PLEASE!
The quantity of sts is multiple 4 + 2.
It would help if you explained stitch abbreviations. Patterns are beautiful!
sc — sinlge crochet
ch — chain st
dc- double crochet
fpdc — front post double crochet
bpdc — back post double crochet
Sorry, I thought they were quite understandable