General inquiry of market and interviews?

Have an opportunity for a small brokerage, and wanted to get some general advice for the market and what to watch out for when interviewing and for the company.

Now I did work in transportation in 2020, but on the driver manager side, so I know "trucking", costs, and revenue. But not the sales aspect (commissions, negotiating, and tactics).

This isn't a direct sales position, but analysis/leadership in the brokerage.

Profit margins, lanes, dedicated aspects, sales reps, etc. I dont know what those things are or how to measure if they are good or bad metrics.