Slip stitch (sl st)
Is chiefly used for joinings or in fancy patterns, and is the shortest in height of all crochet sts:-

Make required length of chain.
1st row - Miss end ch (near hook), * pass hook through next ch, draw yarn through both sts on hook, rep from * to end of ch, turn.

2nd row - 1ch (1ch at beginning of row always forms last st of next row), * inserting hook in second single chain, draw yarn through both sts on hook, rep from * to end of row, turn.
Rep 2nd row for length required.

To work in rounds

Step 1 - make a chain of 5 stitches. Join with a slip stitch into 1st ch. to form a ring.

Step 2 - 1st round - make 8 double crochet (dc) into ring. Place a safety pin in the last dc of 1st round to mark end of round. Move the safety pin to the last dc of the following round.

Step 3 - 2nd round -
2 double crochet (dc) into each dc of previous round - an increase made in each dc. There are 16 dc in round.

Step 4 - 3rd round -
* 2 double crochet (dc) into next dc – an increase made in last dc,
1 dc into next dc, repeat from * all round (24 dc in round) Continue working in rounds of double crochet as required, working increases wherever necessary in order to keep work flat and ending last round with 1 slst into each of next 2 dc. Fasten off.

To fasten off
Break off yarn, draw the end through the loop on the hook and pull up to fasten tightly.