The front post treble crochet (fptr), known as front post double crochet (fpdc) in US terms, is tall stitch that is created by inserting your hook into the spaces on either side of the post below, then starting with three loops on your hook before you pull through your yarn in sets of two. Post is the term used to describe the strand of crochet that is made by a stitch. This technique is great for cables and overlay crochet.
Crochet skills to learn before you fptr
Learn how to front post treble crochet
Yarn over. Wrap your yarn over once around your crochet hook.
Insert your hook into the space below, between the current stitch and the next stitch.
Yarn over again. Using your hook pull the yarn back through the spaces.
3 loops. You'll now have 3 loops on your hook.
Yarn over. Pull the yarn through two loops using your hook. You will now have two loops on your hook.
Yarn over. And pull yarn through last two remaining loops.
Finish. You've now completed your front post treble crochet.