I'm not sure where these came from, but they are very helpful and good reading!
Adjust.pdf - information about valve clearance and how to adjust various other things such as idle speed etc..
Complear.pdf - information about resetting of Toyota ECUs.
Comploca.pdf - electronic components location.
Cooling.pdf - Cooling system.
Gtest.pdf - Various testing procedures.
Ingwavef.pdf - Injector pattern tutorial - info about noid light.
Lwirdiag.pdf - Wiring diagrams.
Servturb.pdf - Scheduled services for turbos.
Theory.pdf - my favorite - theory of operation.
Wirdiag.pdf - More wiring diagrams.