Is it a complete course for any of the languages or it just a basic things

Answer 1

Chess as a metaphor for learning programming on SL

It's like understanding the rules of chess, and being a chess Grand Master.

No, you will not be a Grand Master.
Yes will know the names of all the pieces, you will know how each one moves, and you will understand the rules complete.
You will be a chess player.

Answer 2

The tutorials here teaches the basic things. What is important that you go for practice, exercises, code challenges and so on.

Answer 3

It's just basics , complete courses you can search and learn after basics)