What is the best resource or finding qualified people willing to work for a startup?

Startup communities such as Whub and co-working spaces definitely help to find people with the startup passion and attitude to help you make the company fly. There are now also recruitment agencies where they specialize in startup talent acquisition which is super helpful for us while they understand the needs of a startup and most importantly they have the flexibility we desperately need in terms of cost, selection process and basicallyanything throughout the recruitment process really.