What’s the best way to raise money?

Mark Suster (Managing Partner at Upfront Ventures)
So What is The Right Level of Burn Rate for a Startup These Days? | Bothsides of the Table

The earlier the round, the less capital you need and the more reasonable your valuation the less time that is needed generally to raise capital. In other words, raising $2 million at a $6 million pre-money valuation has always been easier & quicker than raising $20 million at any valuation.