See Part 1 of Eivor's Crochet Granny Square Tutorial for how to crochet the centre section of the granny square — rows 1 to 7 — which crochet stitches are used to make this square what kind of yarn and hook we used create the square in this tutorial.
In Part 2 — row 8 — I'll show you how to edge the centre section and make the loops with picots.
If you simply want the pattern instead of the tutorial see Eivor's Crochet Granny Square Pattern.
loopss into post, ch 7, skip 2 spaces [chain space, post, chain space] and slip stitch into next post,
continue row 8working into ch spaces under loop (the spaces we skipped earlier) with sc 2, sc 2,
turn (for bulky yarn like this I find it beneficial to chain 1 then turn)
continue loopcontinue working into the loop space
sc, picot (ch3), sc2, picot, sc 2, picot (top of loop), sc 2, picot, sc 2, picot sc 1 (total of 10sc and 5 picot)
continue row 8sc 2, sc 3,
that completes the first side of row 8
repeat 3 more times, ss to finish row