hate to say it but you may just need to take a deep breath and start with step 1 in the instructions... There are plenty of guys here willing to help you through it.

On the elevons. You need to separate them from the wing at the pre-cut slots, then bond in hard balsa strips for the hinges as I remember. (although it was a few years ago) Its not that difficult, but it is time consuming... You could save a little time in the elevons by building the hinges with a simple chambered hinge line rather than the radius with concentric hinges.

By your reply, is this your first jet? The Stingray is a handful for a first jet, although it may be alright for you if you're comfortable with a small plane going very fast in relation to its size... The energy management on landing is critical too.

Kelly