Help with 9 speed transmission

Taking a break from my own job to reply to the whole group, not to yourawahoo's message necessarily - thanks so much for all the input. I'm going to try to share all of this with him after I get home. Yesterday was paperwork and videos, he'll be heading to his first day of driving with somebody tonight. He has 3 months of tanker experience but not doubles, so hopefully it will go well - be interesting in any event! I'm encouraging him to set up his own ID for chat because I am not a trucking insider and don't ask questions the right way - for example, i think he was originally asking about the rpms for the different gears, having nothing to do with the speedometer (ugh! slaps head). The device that shows the rpms was screwed up in his last 10 speed truck (which had been in a bad accident before he got it) and it was hard to judge when to shift into some of the gears - I hope that makes sense. I'm sure the person who his going to be driving around with him during his first week will clue him in on all the fine points of handling the new/different truck. It's going to be a day cab vs. the sleeper he drove around in before, so there will certainly be an adjustment period. He is just anxious to do well. Based on what I was able to absorb from the comments, I'm betting he is just overthinking some if this and everything will be fine.

All you folks are really generous to be helping new people in the industry this way. My hat's off to all of you.