Start with 8 chs.
Insert hook into the first chain and make a slip stitch.
Insert hook into the chain loop you have just created.
I continued on making sc in the loop. It looks like I stopped at 13 for some odd reason. At this point you are just practicing, so just make whatever fits.
At this point you make a choice (or follow the pattern if you are doing something other than practicing).
You can either make a slip stitch in the top of the first sc.
Make a chain.
And continue on, making two sc in every other stitch and one in the other.
OR you can create a sc in the top of the first sc...
...and continue on.
There are a couple of differences and reasons why you'd choose each. When you use the slip stitch method, the end of the round is much more obvious. The downside, is that when you are making a larger item (like a hat) there will be a line going down the side where the end of row is.
When you choose to use a sc instead, you have to mark the end so that you know when you need to change or where to count from. The great thing about it is you can have a completely invisible end with no seam.
Have fun and please ask if you have any questions!!