But what about the putting back together?

I've had one for a few years (it's one of my favorite rifles), and still never disassembled it. I've watched a few YT videos, but it looks somewhat daunting, and that's what's kept me from it. I've only given it a superficial cleaning, and I need to do a detailed scrubbing of the insides.

Do you have any hints or special tricks for reassembly? Any info would be appreciated!