I have been trying to find a multiple exposure mode on my D3300 but cannot find one, could someone tell me where to find it or if there even is one? Thank You
The Nikon D3300 does not have a built in multiple exposure mode. You can use multiple images from your D3000 and combine them using any post-processing application that offers the feature. The most popular software application that allows you to combine two images is Adobe's Photoshop.
Nikon D3300 ... use Image Overlay in the Re-touch menu. :)
See: Image Overlay: Combining Images Together In-Camera (nikonusa.com)