Agreed. http://gen.lib.rus.ec http://gen.lib.rus.ec is my go-to. If it ever goes down then a quick web search or a visit to https://en.wikipedia.org/wiki/Librar

Agreed. http://gen.lib.rus.ec http://gen.lib.rus.ec is my go-to. If it ever goes down then a quick web search or a visit to https://en.wikipedia.org/wiki/Library_Genesis https://en.wikipedia.org/wiki/Library_Genesis and the new mirror appears. Also, literally everyone already knows this, but SciHub for journal articles: https://sci-hub.tw https://sci-hub.tw (mirrors: https://en.wikipedia.org/wiki/Sci-Hub https://en.wikipedia.org/wiki/Sci-Hub).