Nightmare OTR first assignment...help pls

My dh had driven local for 12 years and just took his first OTR job last week. He went to the 3 day orientation and got his first load assignment yesterday. He got to the pick-up location on time and then had to sit there over 4 hrs past the p/u window of time to get loaded because the company wasn't ready to load him. He took the load and headed to drop-off, was behind before he even got started. He should have dropped first load off today, picked up second load and have delivered it today...instead he just called me and said he is thinking of quitting tomorrow because he hasn't even dropped the first load. He can't figure out how to operate the onboard computer...got no training on that during orientation...and he keeps having to call his dispatch for stupid things like how to fuel up (he ended up needing a number they failed to give him during orientation). The dispatchers apparently are being hateful and rude to him because he doesn't know how to do these things and yelling at him because his loads are behind. He is now parked at the location of his first drop...got there 30 minutes too late to drop so he has to wait till 6 am which puts him even further behind...and when he asked where he could get something to eat he was told there was a burger place about four blocks away. He said to the warehouse guy, "good, I can walk that and stretch my legs" and the guy replied, "You don't want to do that, it will be after dark by the time you are heading back and you don't want to walk in this area after dark". He knows the dispatcher is going to be mad when he calls after dropping this load to tell them it just got done and to get the exact address for the next p/u...does anyone have any advice about operating the computer system or is this all normal for the first OTR trip?