Step 1: First of all download the binaries from the following link,
and then unpack the archive.
Step 2: Setting up Path and Environment:
For quick access, add scala and scalac to your path. For example:
Environment Variable Value (example)
Unix $SCALA_HOME /usr/local/share/scala
Windows %SCALA_HOME% c:\Progra~1\Scala
Now you can simply type “scala” in the terminal to start the scala shell.