I don't know if this is the case with you, but most of the time when someone pitches me (a developer) an idea, they have not thought it through. And I'm not tal

I don't know if this is the case with you, but most of the time when someone pitches me (a developer) an idea, they have not thought it through. And I'm not talking technologically or how to program it, or what computer language/framework to use. I'm talking much more basic. I mean they haven't thought through what will happen when people click various things. They haven't thought through the basics of what information will be presented and in what basic way and what might happen in various circumstances. Such people are generally unaware of how much they haven't thought through. They are super excited about a kernel of an idea without any of the details worked out. I highly suggest getting a pencil and bunch of paper and sketching pictures of what the main pages would look like. For every link or button you draw, you should have something somewhere physically drawn that represents what happens when it is clicked. You will likely be tempted in some cases to take a shortcut and just write a note that starts "Basically...", or "Kind of like..." Don't do that. Come up with specific (if not permanent or polished) pictures for everything. The point is not to produce a prototype, but to uncover what you don't know about your own idea. If you are like most people (even me) you will find there are huge swaths of questions you hadn't even considered yet.