Ok, so usually when I'm posting screenshots to the forums, I have to paste my photobucket link in the type box, but I've noticed that people have made it so that it's not a link, but it's the actual picture in the box. Any idea on how you do this?
Just copypasta the "IMG code" that photobucket provides with each image. That is generated code that will properly embed the image (i.e. display the image in the thread like what you're describing). You could also find the "Image" button and copy the URL of the image directly into that, though you'd to know which URL from photobucket etc. to use.
BTW I'd stick to embedding images before playing with spoilers but Fortifier41 has the basics down, I don't know if spoilering your images will keep them all from loading up on the page at once.