Help with 1997 240sx

[Kyomae]

I just recently bought a 1997 Nissan 240sx, but it has a few problems, so I was wondering if you guys could help me with them a little.
I'm new to the 240sx scene, and new to cars pretty much, but I'm willing to learn and work on everything.

Ok, so here are the problems:
There's a minor oil leak,
and the gauge cluster doesn't work.

I was just wondering if any of you have any suggestions of where to check first before I go in and take the whole thing apart.

Thanks, guys!