Sometimes it's hard to know where to insert your hook when you are joining a round with a slip stitch. In this example I will use ch-3 to demonstrate.
Use a safety pin or stitch marker to mark the ch-3.
If the ch-3 wasn't marked, you might have thought that you would join the round by inserting your hook where the arrow is pointing to the next stitch.
To join with a sl st, insert your hook into the ch-3, pick up 2 loops from the ch-3.
Pull the yarn through the ch-3 and then through the loop on the hook.
Finished. As you can see in the photo to the left, there is a little gap between the ch-3 and the next stitch. That is caused by the ch-3 being a skinnier stitch than the double crochet stitch.
If you need to make a double crochet increase in the same stitch, first ch-3, then yarn over and insert your hook where the arrow is pointing, yo, pull loop through st, yo, pull through 2 loops on hook, yo, pull through remaining 2 loops on hook.
Some crochet stitches seem to be more difficult than others--but they don't have to be scary. The front post double crochet (fpdc) is one of those stitches that you might shy away from. I'm going to show what to look for when you are working in rounds because it's a little different than when you work in rows.
First, let's look at a row. When you insert your hook in a stitch in a row, your hook is inserted just a little to the left of the stitch you will be working. In the photo, looking at the stitch inside the rectangle, the arrow is pointing to where you will insert your hook for that stitch.
However, when you work in rounds, you will insert your hook just to the right of the stitch you are working, as shown in this photo.
To make the fpdc stitch, you yarn over, then insert your hook behind the post of the stitch you are working, yarn over again and pull your hook through to the front of your piece and finish just like a double crochet, yo, pull through two loops, yo, pull through remaining two loops.
You can see in the photo to the left, you do not insert your hook into the top of the stitch; the stitch is made around the post only.
If the next stitch is a double crochet, you want to be careful where you insert your hook. You don't want to insert your hook into the top of the stitch where you just made the fpdc.
Sometimes the top of the next stitch is slightly hidden by the completed fpdc, just remember that you insert your hook to the right of the stitch you will work and that should help you find where you need to insert your hook. See photo below.
Increasing stitches in the round, requires that you make two stitches in the same stitch.The instructions might say to make two fpdc in the same stitch, in this case, you would make two fpdc around the same post. Or the instructions might say to make a half double crochet and fpdc in the same stitch. In that case, you would make a half double crochet in the top of the stitch and the fpdc around the post of the same stitch.
Crochet ribbing can be made by crocheting double crochet and fpdc stitches, When you alternate, fpdc, and another stitch, like double crochet, be sure you don't make your fpdc around the post of the double crochet stitch. In this photo, you can see that the double crochet stitch is between the two fpdc.
I hope this has answered some of your questions about the front post double crochet stitch and crocheting in the round.
Many of my ideas don't work out, not initially anyway. Sunday, I came up with an idea for a lacy, flowery triangular head scarf, but the yarn I used was too heavy for the design. Since I don't have the yarn that I need to try it again, that idea will have to wait for another time.
One idea I've had in the back of my mind for awhile is to try some color work that looked like leopard spots. Last night I attempted to crochet it, but it just didn't look the way I wanted it to look. That too, will have to wait.
When I look at what other people are selling, I see a lot of the same patterns. On the one hand it's important to offer what sells. On the other hand, I don't want my shop to look like every other shop that sells crochet patterns. So I'll keep testing new ideas and offering them when they work out. In the meantime, I'll be posting more patterns that are similar to what everyone else is selling.