Which course should I pick?

Total beginners:

Start with Beginner 1 module up to Beginner 4 (A1)

After completing Beginner:

Start with Elem 1 module up to Elem 4 (A2)

After completing Elementary:

Start with Int 1 module up to Int 4 (B1)

After completing Intermediate:

For Advanced learners with levels B2+