There are some interesting resources in the above comment. However, by criticising all the introductory material and replacing it with nothing, it misses the point of having a guide to learning Scala. The "plan" it suggests is essentially this:

1. Ignore the freely available, expert-written introductory material on the internet;

2. Don't use tools that will highlight simple mistakes for you quickly;

3. Buy this Scala book and read it;

4. Buy this other (very similar) Scala book and read it;

5. Buy this more advanced Scala book and read it.

Leaves me wondering whether bad_user works for a bookshop.