The first thing to do when learning a new programming language is to write an obligatory 'hello world' program.

% wget https://code.call-cc.org/releases/5.2.0/chicken-5.2.0.tar.gz
% tar xvfz chicken-5.2.0.tar.gz
% cd chicken-5.2.0
% make PLATFORM=linux PREFIX=/usr/local/chicken
% make PLATFORM=linux PREFIX=/usr/local/chicken install
% make PLATFORM=linux PREFIX=/usr/local/chicken check