The Asterix series is set in Gaul (modern France) during the days of the Roman Empire. It tells the story of a small village holding out against the Roman invaders with the help of a magic potion that gives them superhuman power. I loved this series as a small child (and still do) for its graphic style, great stories, and twisted sense of humor. Click on the pictures below to get an Amazon link to each book.
All the books are great but if you want to start with the best you should get the following:
Many animated film versions are also available on YouTube. I’ve embedded a few below but I still think the books are better than the movies.
Asterix the Gaul
Asterix and Cleopatra
Asterix and the Vikings