I bought a flatbed scanner from Amazon a few months ago for ~$60 and used it to clear out an entire 4-drawer filing cabinet. I minimized everything to fit in the built-in file drawer of my desk and it was a WONDERFUL feeling when it was all finished! It was definitely a labor of love but I listened to a bunch of podcasts and broke the scanning sessions into segments so I didn't get too overwhelmed. This scanner only fits up to letter-sized documents so that was a bit of a challenge, but larger scanners are so much more expensive.
https://www.amazon.com/gp/product/B00LN0NUOO/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1
You can use a simple scanner like this or any other one you may have lying around.
I've never really used movie maker but it should be able to do the job perfectly. Just look up videos explaining pan/zoom.
Excellent! I use this one because it's relatively cheap but still delivers good quality. You just have to make sure you scan as "photo" rather than "document" for decent quality.
That's a lot of manuals...
If I were buying an inexpensive flatbed, it would be this one:
Canon Office Products LiDE120 Color Image Scanner https://www.amazon.com/dp/B00LN0NUOO/ref=cm_sw_r_cp_apa_XH.bzbJW6D47A