Will not start

Last night I got in my car (Wagon), pushed in the clutch and started the car. It started, but it was vibrated super bad. So I thought, "Maybe if I give it some gas it will help out (thinking maybe it wasn't getting enough fuel or something)". When I did this nothing happened. Like nothing. The RPM's didn't budge, there was no change in engine sound/noise, and no acceleration obviously. I then put the car into gear and tried with no avail. Luckily, I had a friend who lived nearby, so I made a phone call and he showed up within a few minutes. As soon as he got out of his rig, I gave him my keys and he got into the car to start it. It started right up! No vibration and everything seemed to be working completely normal. So I got in and drove the twelve miles home without issue. Woke up the next morning and it wouldn't start. It turns over and almost starts but not quite. So either fuel or spark right?