Since this is an audience of passionate technologists, here's the top piece of advice I have: Do not be seduced by the technology! I killed one of my startups this way. I've seen many many die this way. It can hurt your pride as a passionate technologist to choose non-cool but mature and easy-to-hire-for tools. But it's those tools that are the most economical. Remember, your customers care 0% about the backend techn…
marketing encompasses the 4 P's: product, price, promotion and place. product is literally the finding of the fit between your offering and the market's needs. price is the portion of the value you deliver to the customer that you capture. promotion is finding and providing potential customers with info about why your product is the shizzle. place is how you deliver the product to your customer (e.g., physical store, direct sales, saas, app store, etc.).
build things that support your marketing activities, rather than building tech that you hope you can market.