Schematics and tutorials

[Super Constellation]

What are the best internet locations to find schematics and tutorials about aircraft systems (electric, A/C, APU, Fire, Hydraulic, etc...)???
What books do you recomend on this systems?
Help tech fans to keep in touch with this so unspoken matters.

[el loco]

i wish i can help.
but the intent of my reply is just to let you know tha in my humble oppinion the CONNIE is the greatest airliner of all times, i wish i've flown it.
good luck brother.