Unresolved 3D printer is acting crazy

I first go the printer in September 2015 and no matter what I do, it does not work. The first time I used it, I downloaded the software and then tried to print the calibration circle. The only problem was that I didn't get a circle, but instead I got something that resembled a 3D scribble. The next time I tried to use it, the entire thing locked up and I smelled smoke. After I fixed that the extruded stopped working and instead of printing something, it just went through the motions. After I did some experimenting with the extruder, which I got working, I tested it again. Then the extruded instantlly hit the maximum temprature, I burned myself, and I had to reset everything. When I finally got it back on, it made a painful screech when it tried to move up, so I unplugged it. After I plugged it back in, I tried printing again and the printer head would not move down, only up. Does anybody know what is happening and how to fix it?

P.S. I can not take it to a repair shop because according to my dad "We don't have the money," even though we do.

 

1. No, it also continuousaly moves up as it prints.
2. I know about electrical safety, since my dad works with it a lot, but thanks anyway
3. Toutching the extruder was an accident. I got the list in the wrong order so it sounds like I toutched the extruder before I unplugged it, but in fact it was the other way around. I thought the extruded had cooled off and I reached in to move some wires around. That's when I accidentally touched the extruder, which was still about 130 degrees, and burned myself.
4. I will upload a video as soon as I get the printer plugged in and I figure out how to upload a video

 

If the endstops aren't flat against the X-axis brackets on both sides of the machine, the printer will think it has to pick the X-axis up to trigger said endstops.

Also, if the X-axis isn't running parallel to the bed below, the touch-off routine will react the same way.

 

I am sorry that I haven't posted in so long, I have been very busy. Anyway, I tested the printer but instead of even moving, the printer head went from 27 degrees to 350 degrees then to 27 degrees then to 350 degrees and so on. I also checked the endstop and it was flat against the X-axis brackets, so I don't think that caused the problem. I only have one endstop and I am not sure there if there is only supposed to be one endstop or if my printer was constructed incorrectly.