Won't start

I have a '91 Acura legend 4dr sedan, don't know the engine size, but I think its a V6. My problem is that it won't start I don't even hear a noise when I try to cranik it, I don't think its the battery b/c the lights are bright, but in lifting the hood I noticed that the cap for the oil was off and probably has been that way since my last oil change(which was over a month ago) I thought maybe due to the heat that it might jus need some oil. It was strange because my car had been working up to that point fine, it cranked with no problem on my way to work. I thought it might be the oil also b/c of the heat and in looking at the oil measuring stick it looked bone dry