Alright I knew there was some boaters on here. My main thing is that my father is a boat guy, but he's an "outboard" boat guy. So I cant get all the info from him. Ive been on that iboats.com site, and theres a lot of info to wade through. I'm mainly trying to identify all the components in the engine, like where fluids go and get checked and so on. The manual has no pictures at all.
Now most of the stuff is simple because it is a car engine.

I'm pretty sure the resevoir on the right is where the I/O gear oil goes correct? It looks like its on the low side but when its in the water it looks fine. Which one am I filling to?
Wheres the coolant go, get checked, how often, what kind..etc?
Transmission fluid?
Last and important...I have a small bit of oil residue on the inside of the engine cover, which looks to be seeping from the valve rocker cover at the back of the engine but cant really tell. Theres a small plastic hole that you can see in the pic just above the air filter, that comes from the top of the valve cover. Is there supposed to be a cap or hose coming from that? I seen oil residue around that point and thought maybe is was coming from there?
Oh and is it okay to run the boat without the cover to determine where this is coming from?
Yes B.O.A.T, is correct. I'm not really in it too deep right now and she runs good aside from this and that...haha
Thanks