Payday loan facts: Can you have two payday loans at once?

As far as I know, a payday loan is a loan that directly depends on your income. So, this loan will be expended in the longer term if you have a lower income. If you have a higher income, you can repay this loan in a shorter period.
I am not a professional in this area yet, but I try to learn as much as possible not to make too many mistakes while opening my business. I want to run a small business, and I need to learn how people do that and choose the best loan option, not just the first offer. Thats why I spend time and do the reading on https://www.youngandthrifty.ca/ and other sources.