Multiple Access Point equipment and cautions?

Multiple Access Point equipment and cautions?

I am about to set up a multiple access points for a huge warehouse and I need some help. I don't know where to start looking or what to read to learn more about multiple access point networks. I need to know what equipment I will need.
The plan basically is to have a main switch on which many wired computers are connected and many wifi access points throughout lets assume, an imaginary huge rectangular.