There has been no better time in human history than right now to be able to do the things you describe. Between books.google.com and scholar.google.com you have free access to a library that the greatest universities in the world couldn't have given you even 20 years ago. With sites like academia.edu, researchgate.net, and others, you can establish networks and contacts, publish your own manuscripts and solicit comments, and more. There are vast numbers of top notch university lectures online from Yale, Oxford, and many other places (edX, YaleCourses, etc.). As I say, it is easier to do what you describe now than at any point in human history.
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There Are Four Lights!