[chrisgoman]

If your goal is to create your own startup, the technology doesn't really matter. Unless your startup is a "mobile app", then that is also not important today. As with most suggestions here, your best bet is to start with web dev (like you have mentioned) but don't get sucked into the hype. You could do a lot with Rails or PHP (this gives you a solid understanding of some foundational stuff)

- Internet: Domain names + DNS + Hosting (VPS is enough)

- Web Dev + Backend: Nginx (web server) + PHP-FPM (PHP) OR Unicorn (Rails)

- Database: You will need SQL no matter what other people tell you

- Front end: HTML, CSS (Bootstrap), Javascript (jQuery)

These are the most "boring" things you can learn but you won't spend weeks just getting your environment going and you are already frustrated. All the cool stuff deals with async, PWA, SPA, NoSQL, (... insert more buzzwords here ...) that will just confuse you before you even get a login page up and running.

Your goal is to be able to create a functioning "web application" that may already exist so you can just "borrower" the features and not have to think too hard if learning coding and technology is where you are at right now.