<human>: Today was another class where I am being trained as a Diesel mechanic and the first time we would be working on an 18 wheeler. The added bonus was the manual transmission and the fact that this rig was sitting for a very long time. After replacing the battery we tried to start the engine but failed. At first someone didn't know how to shift into neutral and kept letting go of the Start Engine button too soon. 

I decided to give it a go and managed to start the engine but didn't know you had to hold down the clutch. Manual drivers can guess what happens next and for those who don't know, the engine will stall if you don't use the clutch. I spent the next few minutes starting the engine and watchiing it stall repeatedly. Someone told me to press down on gas petal all the way but it did no good. 

I handed the reins to someone else and they had no luck, also pressing down on the gas and stalling. At this point, the instructor and another student did a wire bypass from the battery to the starter. I wanted to start simple and make sure all filters and the injectors weren't clogged. Keep in mind I didn't know my mistake until after class when I spoke to someone who knew how to drive manual. The two stopped communicating with the rest of class and nobody knew what they were doing so people started leaving. 

I stayed and did a visual inspection when I was able to before leaving myself after they gave up. Maybe the problem isn't entirely starting it wrong but can't know until we do things right. There was an oil leak from the turbo, possibly another leak from engine but the bleeder valves were opened once so I couldn't tell. The dashboard had three blink codes: low oil, oil temp, and a symbol with a circle and three hollow dots. 

Replacing, battery, fluids, and filters would be my priority before anything else. Second is those oil leaks. Seems pretty necessary in making sure an engine runs but maybe I'm going about this wrong since the instructor didn't have us do it.

If it is the clutch then I actually feel pretty embarressed. Definately a fuck up in my books.

Can you summarize the given text in a few sentences?
<bot>: Worked on a big rig with manual transmission for Diesel Mechanics class. Didn't know that I should hold down the clutch, stalled engine repeatedly and no one knew what to do.