Bookicious - Find the best new book to read with books collections for makers, founders and entrepreneurs.
Huntathon - Browse and submit Product Hunt Global Hackathon projects
Goodreads - See what your friends are reading.
Foundler - Online hackathon weekends. Attend every other week.
Bookcelerator - A curated directory of books that will make you smarter
Confs.tech - Open source list of tech conferences: JS / Ruby / Data etc.