A complete beginner? Nope. Well, at least not yet!
Eventually I do want to make it a one-stop-shop which will teach you everything and take you from a complete beginner to someone who can immerse in native media as soon as possible. We're not there yet, and the site works best if you're at least an advanced beginner. The bare minimum requirement is that you know hiragana and katakana already.
Your best bet would be to start with a textbook of some kind and/or some actual lessons with real teachers to learn the basics. The more of a beginner you are the more the human touch helps; the more advanced you are the more you can depend on apps.
I'm creating a free Japanese course that ships as a flashcard deck for Anki. It completely starts from zero, maybe it helps you: https://ankiweb.net/shared/info/911122782
I guess this format is similar to what jpdb offers, maybe you can even import it there. The deck currently covers most grammar and a little more than 800 words on ~1800 flashcards. It's mostly based on anime though, so at least some interest in this is beneficial ;).
jpdb looks really cool, but will it work for somebody who is a complete beginner?
I want to learn Japanese, and intend to commit time to doing so sometime in the upcoming 2-3 months. However, right now, I'm literally at zero.
Is there somewhere else I should go to learn things like basic grammar and sentence structure first, or will jpdb help with that sort of thing too?