As stated earlier, if you want experienced, proven, developers to help you, you have to explain why they'd be better off helping you than on their own. What have you done that would make you an asset to them? What qualifications do you have to form a team of homebrew devs? Do you have a POC for anything you've mentioned so far?
Also, you may want to elaborate on some of your ideas more, or have a few more ideas. I have no idea what "Book" is - do you mean an ebook reader? What kind of social media do you plan on making? Those kind of things.
As it is right now, I don't think any devs will be willing to help you with your project. I don't mean to be harsh, but you shouldn't get your hopes up.
You're missing the point - why should we help you instead of work on our own? You're asking for experienced homebrew developers, we shouldn't need to prove anything - you're the one who needs to prove that you're worthy of help. Do you have any development experience? Asset creation? Project management? What would make you a valuable addition to this team?