Advice: You don't know EVERYTHING about your characters

I've seen a lot of people writing stuff, excruciatingly painfully explaining every single twitch that character had in the first few pages of that story. People, we do not need to know the entire biography of someone right when you open the story. Why? Well, first of all, because we do not care. We are not yet attached to that character emotionally, so it's definitely not interesting. There are few authors that can pull this off, and they have their methods.
Best was to describe characters is, first of all, gradually, over the entire length of the story, so the reader gets to know it and gets attached to it, and then, use a lot of dialogue and interaction. You can very well describe your character through dialogue, he can answer inspired questions put by other characters, so you don't need to foolishly explain everything to your readers.
That should be a ground rule. Your readers are not stupid. If you hint them something, they will probably understand what you meant without trying to give them every single bit of information you have stacked up. Also, don't have every single character of your fully developed in your mind in the beginning. Of course, if that happens, it doesn't mean it's wrong, but you will be amazed at how much your character can evolve while you're writing your story. Every twist and turn in the plot, will obviously affect your characters, and through that you will find out how they're shaped and how they react to different impediments. Test yourself, put a character through a few different actions that would obviously endanger it. Write down how he or she would react to that. After doing that, you'll have a much clearer picture on how brave your character is. You can do this for a bunch of other qualities you can think of.
I hope my advice will help you, and hoping to see some feedback here.
Start writing.

I think I have a title

One of the best things you can do as an author, especially, an inexperienced one, when writing your first major piece is to find a title before. Of course, it doesn't have to be the one you'll use when you finish it, but something to get you started, to give you the definitive proof that you are headed somewhere.
I am, apparently headed somewhere with my novel, but didn't think of a title yet. This until yesterday. Another sneak preview I'm gonna give you regards two main themes in this book, probably one of the first two locations that I have imagined from the beginning. One that I am completely familiarized with by now, about which I sketched already entire scenes and charts of significance and another one that is just revealing itself to me. You will understand in a second why one of them can be the title of the novel and the other cannot.
"The Dump" will be one of the major "spacial" characters of the book, obviously when you will read it you will understand why. There's still some time till that happens. The second, that I think will be the title of the book is "The Glass Gazebo".
I already have in mind so many ideas about this fabulous place I have discovered that I cannot wait to share them with you.