Seriously, you need to know if the job is a W-2 (employee) or 1099 (independent contractor) relationship.
If it's W-2, you probably know the drill .... salary, commissions or draw, benefits, perhaps reimbursement for some or all expenses, etc. The company controls your schedule, etc.
As a 1099, there are pluses and minuses as well. First, you set your schedule and goals. You may have an assigned territory and product line (more on this later). You are generally expected to cover your own expenses (and benefits, as well as paying taxes, including self-employment FICA). You will want to figure on how much you really need to earn to make the living you expect to earn ... if travel, expenses and taxes eat up a significant part of what you need to live on, you'll need to earn that much more.
You do need to confirm (and formally place in a contract) any geographical or product line limitations. Can others come into your territory/product line and sell your products? That might be a problem (or an opportunity if you can go elsewhere to sell). What rights does the company have to limit, restrict, realign, add other sales people, etc. into any protected territory you might have? What notice must they give you to terminate the relationship? What types of non-compete clauses are involved?
All that said, a 1099 relationship can be very profitable for the contractor and the company ... especially if the company values your contribution to their success and doesn't start thinking about how to take some of that money to the high paid sales rep and put it in their pocket.