Python is a very important and ubiquitous programming language with a free software license originally authored by Guido van Rossum who made the initial release of python in 01990 when he was 34 years old.
Django is a web framework for writing web apps which is based on python. Some well-known web apps are those found at the following sites: PBS, Instagram, Mozilla, The Washington Times, Disqus, Bitbucket, and Nextdoor. Django is perhaps the most widely-used web framework for this purpose although there are other widely used web frameworks too. Django was created in the fall of 02003 by Adrian Holovaty (who was then age 21 years) and Simon Willison (who was then age 22).
djangoforbeginners.com is an introductory book (first three chapters are free on the web and provide a great introduction) authored by William Vincent that anyone can use to learn django and thus acquire all the skills necessary to begin building web apps yourself.
Web apps represent one of the fastest growing sectors of the global and US economy, and web app designers are extremely highly sought after by myriad companies throughout the world. In the US, salaries for web app designers start at around $50,000 per annum (which is about twice the salary of someone who gets paid the legal minimum wage) and go much higher, perhaps $100,000 to $150,000. This book also introduces the reader to git, github, and heroku (ひろく) three ubiquitous tools associated with programming and web apps et. al.