Foundler - Online hackathon weekends. Attend every other week.
Take The Bait - A blog about building your MVP & finding your first customer
Confs.tech - Open source list of tech conferences: JS / Ruby / Data etc.
Launch Library - Hundreds of resources on how to launch literally anything
HackHub - Host tech events and hackathons with ease 👨💻🛠
Lean Canvas - Business plans take too long to write, are seldom updated, and almost never read by others but documenting your hypotheses is key. Lean Canvas solves this problem using a 1-page business model.