It is perfect for beginners.

Link to YouTube video.
https://www.youtube.com/watch?v=xIZuHcx1_v4

Skill level – Easy
This pattern does not include crochet lessons. But, if you know the basic stitches, you should be good.
The pattern does involve sewing on a design.
Format – PDF

Stitches and Abbreviations
This pattern is written in US terminology
st/sts – stitch/stitches
sl st – slip stitch
Ch – Chain
DC – double crochet

Tools and Materials
-5 mm crochet hook
-Bernat Premium #4 worsted (medium) yarn
-White, Green, and Grey
-Yarn needle
-Scissors

Final Size
- Diameter of 12 cm
The gauge for this pattern is not that important, just note that you are aiming for the circle of the coaster to be about 12 cm in diameter.