I am new to this forum, and haven't properly introduced myself yet but I'll do that after I answer your question.
When hubby and I started out we went to National Training in Florida to obtain our CDL A. Then we hired onto Central Refrigerated and they allowed us to train with a trainer - together - on the same truck. It worked out well. It wasn't as crowded as you'd think and only lasted 5 wks. We got released early as we learned fast.
The things you need to be aware of about Central is:
1. They screw up the pay a lot. You need to keep a close eye on your pay and they will fix it, but it's a hassle.
2. They pay *very* low pay to trainees and to newbies. You need to know this. You'll starve otherwise. Have some backup $$$.
Hope this helped you somewhat.
Oh, and by the by, this is for tractor/trailer.