I have rebuilt a 465 transmission, and there is one serious piece of equipment needed you probably do not have. You are going to need a hydraulic press to take apart the main-shaft, in order to install new synchros. When I rebuilt my 465, it was in an Automotive Driveline Class, I was taking, at a Community College, which had all the equipment and documentation I needed to do the job.
I would recommend taking a manual transmission to a shop, instead of building it yourself. Buy a "Master Rebuild Kit", which will come with all new bearings, synchros, and retaining clips. Then tell the shop, rebuilding it, you want all the old parts back, so that you can verify that the parts where actually replaced.
You could do what I did, and enroll yourself in a Driveline class at your local Community College. A Driveline class will cover both automatic and manual transmission, and differentials. Most of these classes have a lab portion, which will allow you to actually rebuild a transmission or differential.