This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
This forum is the best source of information on the SCJD certification. Just uses the search functionality to find what you need. I am not aware of any mock projects or exams. From everything that I have heard, the exam is very easy. As long as you do your own work, you will not have to worry about it. Good luck.