This is quick and easy make, suitable for an intermediate crochet level.
I would list is as a beginner level, but you need to know the popcorn stitch. Better still, take a look at how to do a popcorn stitch tutorial. If you are able to do this stitch then you will be able to complete the pattern with ease.
The pattern gives a rundown of the stitches needed and the abbreviations the pattern uses. It works in Rounds and Rows.
You can easily make this bookmark longer or shorter by increasing or decreasing the repeat rnds between the front and back legs.
You need only a small amount of DK yarn. A great stash-busting project, as well as a 3.5mm hook. The pattern is in US terms.