I'm seeing a few issues from the pics you posted..
It's common to see oil in the rubber air tube..
That oil gets pushed into the air tube through a rubber hose connected to the oil fill neck on the passenger side valve cover..
If the PCV system has been neglected for awhile, then you get more oil collecting in there..
Most of the time it's just oil vapors inside the air tube that build up to an oil film in there over time..
The oil laying on the bottom of the MAF sensor housing isn't going to hurt anything...Maybe if you had your MAF installed upside down..
Gravity just let that oil slowly works it's way down there..
Nevertheless it would be wise to carefully remove the MAF sensor and clean it..
They make an aerosol spray specifically for cleaning the MAF sensor..You can buy it at the auto parts store..
The inside of that Throttle Body is filthy..I'm sure the inside of your Upper and Lower intake is coated with the same shit..
You can clean all of that out of the inside of the Throttle Body, and your Upper/Lower intake..
The way the PCV and EGR systems are set up, they will eventually go back to looking like that again though..
The only way around that is to install an oil separator, so the oil doesn't get sucked back into the intake..Instead it goes into a catch can..
Then the EGR pumps all that black carbon back into the Intake..Only way to fix that is to remove all the EGR related shit..
I would suggest replacing the Upper and Lower Intake Gaskets, as well as the Throttle Body Gasket, EGR Gasket,IAC Valve Gasket..
You might as well replace the pintle caps and O-Rings on your Fuel Injectors too..
Then change the Fuel Pressure Regulator as well, since you will have easy access to it with everything apart..
It would also be a good time to change all the hoses coolant runs through..
Like the heater core hoses, then both of the small hoses coming off the Water Pump..
As well as your Radiator hoses, besides now would be a good time to flush all that old coolant out and check the condition of it..
Moving on to the next set of pics..
You have a broken TV Cable, well the plastic is split from the cable..Even though it might
still be functioning..
When the sheathing split on the cable you don't know if it threw the adjustment out of whack, it might be too loose now..
It would be wise to adjust the TV Cable to its optimal setting..You'll probably have to tighten it up some..
The TV Cable is tricky, but basically it's better to have it pulled tight rather than too loose..Too loose will fry your transmission in short order..
There's a write-up in the Archives on how to do that-->> TV Cable Adjustment