Learn Python: Tutorials for Beginners, Intermediate, and Advanced Programmers
GitHub - thibaultduponchelle/perlres: List of resources about Perl
Perl Tutorial - Learn Perl With Examples - GeeksforGeeks
Learning Perl 6: Keeping the Easy, Hard, and Impossible within Reach by Brian D. Foy | Goodreads
Amazon.com: Learn C the Hard Way: Practical Exercises on the Computational Subjects You Keep Avoiding (Like C) (Zed Shaw's Hard Way Series): 9780321884923: Shaw, Zed: Books
How to Quickly Learn a New Programming Language or Framework — Nick Janetakis