1) Mathematics Wizard Srinivasa Ramanujan : Some glimpses into his Life and Work by two Indian Mathematicians Narendra Kumar Govil and Bhu Dev Sharma is a good biography with an introduction to his Mathematics and links to further resources. Good complement to Robert Kanigel's book The Man Who Knew Infinity.
2) In order to understand the fascination that Mathematicians have for Ramanujan see this and other lectures by Prof. Ken Ono who credits Ramanujan as his inspiration in becoming a Mathematician; Why Does Ramanujan, "The Man Who Knew Infinity," Matter? - https://www.youtube.com/watch?v=7ynhiZJUMzA
3) Mathologer on Youtube has good walkthroughs of some of Ramanujan's most famous identities (eg. 1+2+3+... = -1/12) - https://www.youtube.com/results?search_query=mathologer+rama...
4) All of Ramanujan's published papers and unpublished notebooks can be found online at - http://ramanujan.sirinudi.org/
PS: In the submitted article, George Andrews is wearing a Ramanujan tie :-)