On the first time of assembly I would suggest you turn off the whole world outside.Check a number of times the clearances and take as much time as it takes to get it right.No cell phones,NO BEER,no tv's,maybe a radio,no friends to distract you from a total focus on what your doing in a locked door garage.

And if you get stuck on something,there are no dumb questions.Ask here and you will find the needed support.