Hey there Antwone!! Welcome to MR, you'll find a boat load of resources to get you going with your new reader when you get it.
One of the more popular management tools is Calibre, there is thread for it here:
https://www.mobileread.com/forums/forumdisplay.php?f=166 and you can download it here:
http://calibre-ebook.com/.
While you're waiting for your reader go ahead and download Calibre and beign playing with it and getting used to it by getting all the free books you can:
https://www.mobileread.com/forums/forumdisplay.php?f=26. That's a great way to start building your collection and to discover some really great authors as well.
If you have any questions on your reader be sure to post them here and someone will be happy to help you out.