When the hook, which means "three double crochet in 4th chain from hook"?

I found this point Hook I want to use, but the instructions to the first row are 3 double crochet in 4th chain from hook. What does that mean exactly? The table by the instructions are not helpful at all … Should I skip the first 3 stitches and do 3 double hooks in the fourth? When I tried, it seemed funny … Orrrr can I skip the first stitch and double crochet to the fourth? Gahh if someone could explain it to me, it would be great Thanks!

only three doubles in the fourth chain from the rest of the instructions need to say what to do for the first three chains

Crochet Chain Stitch