[tommyduncan]

These trucks are fairly simple so it's not a bad place to start mechanicing(is that even a word)?
The hardest part is finding parts... or finding which parts work that are listed for something else entirely.

I would search a little higher up for those leaks. Get it fairly clean and let it run long enough to see where it comes from. The two places you circled still could be leaks but that is likely where it collects on the engine on its way to your driveway.

As far as the carb...they aren't too hard to rebuild. Look for fetchmeapepsi's build. He is in a similar situation as you and is figuring it out with a little hard work and persistence.

The turn signals are hard to find parts for. You might have to go with an aftermarket unit that clamps to the column. Trucks not much older than these came with them so it doesn't really look too out of place.