Learning Scala programming language

• Scala Levels

Learning from books

• Scala for the impatient - Very highly recommended
• Programming in Scala by Martin Odersky, Lex Spoon, and Bill Venners

Learning from online tutorials

Udemy course from Daniel are excellent

• Scala & Functional Programming for Beginners | Rock the JVM
• Advanced Scala

Youtube courses from Mark Lewis

• Introduction to Programming and Problem Solving Using Scala

• Object-Orientation, Abstraction, and Data Structures Using Scala

EPFL Courses (Some are from Martin Odersky the author of Scala programming language)

• Functional Programming Principles in Scala

• Functional Program Design in Scala

• Parallel programming

• Big Data Analysis with Scala and Spark

Other useful resources are

• All About Scala can be considered as an online book.

Here at allaboutscala.com, we provide a complete beginner's tutorial to help you learn Scala in small, simple and easy steps.

• ScalaSchool aims at preparing experienced engineers to be productive Scala programmers.

• Scala community.

Practising Scala Programming

• Use Scala REPL or Ammonite locally
• Use Almond or apache toree kernel with jupyter notebook
• ScalaFiddle for practising online.
• Scala exercises contains exercises to tryout on various topics.
• Exercism to solve programming challenges in scala

References

• Learn Scala