OK, this is probably going to sound like some stupid questions, but I have never had a compressor before!
I picked up this compressor used the other week for the garage and it has come without any instructions, and I am a bit confused about some things - hope you can help
So, here are some questions:-
1.- What is the normal maintenance that I should do to this thing? Should I drain the air out from it every evening? Is there something I need to do with the oil, etc?
2.- There are two different locations for connecting air lines to this thing. One is directly on the main air tank (as in the above picture), and then there are two connectors at the other end with some pressure thing attached to it - see this picture.

What is the difference between these two? What do I connect to what, and how do I select the correct output?
Any other good advice?