new to Toyota's need help

I just baught a 1987 Toyota 4wd van. The oil level light comes on after driving for a while. The oil pressure gage stays about half way. The light will go out when excilerating but goes back on after.
I have another light that is on at times. The orange light with the pic of the van, next to the seat belt light. This light comes on when the van is started and stays on. If the light doesn't come on when starting it stays off.
What needs to be done to fex these problems? Thanks for any help

I'd say you should probably check the level of oil in the thing, and if it hasn't been changed recently, do so. As for the other light, you'd have to refer to your owner's manual to determine what it means so you'll know what to repair.