1. Don't get discouraged. As a founder myself, I can tell you this: "this is just the Beginning of the beginning of the beginning"

2. If you truly believe your idea is worth it, and have some cash set aside, I highly recommend you hire someone to build a decent website. I actually went with https://draftss.com/ - if you truly know what you want, you should have a logo + website ready within one month or so. I know it sounds like a lot of time, but in the long run, it'll feel like nothing.

3. Either do marketing yourself, or hire someone - to truly see if there's interest, you should spend at least $500-1000 / month, and see what that gets you (feedback, subscriptions, etc). Then decide how to continue.

4. A bit more detail on marketing - be sure you do it correctly, if you decide to do it yourself. It took me a looong time to realize I was wasting money big time, until I hired a marketing person.

Good luck!