Hey mate,
Manual trans & differential oils is filld on the front of the driveshaft housing (24mm)as the drain plugs (24mm) are located in the rear

dont worry you'lle find it.
Power steering is simply filled in the reservoir
There are tonnes of threads in regards to 'what oils is best an all'
I personally use redline oils foo all my lubrication & hydraulics as these have proven very reliable to me when i raced,the gearbox n Diff uses the lightweight shockproof oil (Blue) which (I think) OE requests 75w90 & the shockproff is rated at 75w140 (this means it has a higher load rating)
Power steering fluid is normally Dexron 3 but I used the redline option because at the time I was buying this at cost & was well looked after.FYI a quart would cost around retail $26.00 so it is expensive but I believe in this product & its never let me down (touch wood)
Hope this helps