Dead 92 Escort- please help

I have a standard 1992 Ford Escort. I got in it today no power or anything.
Changed batteries, tried to jump it, and also roll start but none of the above worked. Does anyone have any suggestions? Pleas help.....

If the head lights don't come on clean all electrical connections on both ends for the battery. Use a DVOM and check voltage at the battery.

Since you said it had no power, I will guess that means it didnt crank over, that turning the ign key to the start position didnt make the engine spin. Some of the lights at the bottom of the dashboard should come on when you turn the ignition key on at first - did those come on?
It could well be a bad ground wire or ground connection. If your 92 Escort is like mine - it has several wires that are connected to the negative post on the battery. Not only the main ground wire to the engine, but the body ground, the ground for the PCM and other things - all come to a strange little fitting on the negative post. Mine was cracked & giving me trouble, so I got a new ground cable, ran it from the neg. post of the battery to the body bolt close to the battery (on the firewall sort of) and soldered the other wires to that same location. I also ran the original ground wire that connected to the battery to that point and soldered it on too.
Other things to try; whenever I have the battery terminals off of the battery posts - I scrape the outer surface of the post, and the mating inner surface of the terminal, with an exacto knife. A small penknife would work. You dont need to scrape much - a thousandth of an inch will remove the lead oxide, leaving clean lead to be in contact with the other part. Lead oxide doesnt carry electricity well.
Also, there is a 100 amp main fuse, in the fuse box that is next to the battery, right behind it. There are several fuses in there, all but one of which can be pulled out to check how corroded their terminals are. The one you cant pull out is the main 100 amp fuse. I doubt this is blown, but its two connections are made via small bolts on the lower side of the fuse housing. Check that they are not loose and are not corroded. It takes a 10 mm socket wrench to loosen these I think. You should -definitely- disconnect the battery before you mess with this however, or you might accidentally blow out that 100 amp fuse, and damage the brain, the PCM.
When you say it doesnt do anything - try just turning on the headlamps. Do they come on? Are they bright, or only a feeble yellow? If so it could be a bad battery cable, (positive or negative) corroded inside the insulation for instance.
By the way, I replaced the headlamps on ours because they were so faded. It made a terrific difference in night-time driving.
Some of the things that will prevent the starter from turning the engine are; if you dont have the clutch pedal pushed down, if the solenoid on the starter is bad (usually this begins to happen now and then and becomes more annoying. It seldoms quits cold without letting you know something is wrong); there is a wire running to the starter soleniod, a small wire, not the large heavy one. If the small wire comes off, the starter wont do its job.
You car has a 'fuel cutoff safety switch', that will pretty much shut the whole car down, if you have driven over a bad bump. You can try resetting that switch, its located in the trunk somewhere, on the curbside I think, behind a little door.
If you didnt live so far away from Northern Virginia, I would make an offer to buy the car - cheap of course. I am looking for another 92 Escort, with the manual transmission. Ours has the 4 speed automatic; on the open road we get 37.8 mpg at 60 mph. Im hoping an Escort with the manual tranny would do even better.
If your problem had been fixed by using jumper cables, I would have said to check that no one left the small lights on each side of the main dome light on. They can drain the battery in a day or two, and arent noticeable in daylight.

As said above, check the fuses. If nothing is found wrong with the fuses turn your attention to the ignition switch. If you know what you are doing, try to jumper the wires at the switch and see if it goes.

Did you figure it out? I had something similar happen to mine; it turned out to be my ignition switch (Borg-Warner part, I think it was around $25). The ignition-lock tumbler (where you stick your key) connects to a switch inside your steering column. Tear it apart, you only need to remove a few bolts to take off the plastic covers that surround the column. Once that is done you can actually start the car with a flathead screwdriver. In my case I just replaced the switch and it was good-as-new.

Ignition switches are a common problem on these cars.