Trying to plan a small home network consisting of old desktop [function as server] and two laptops. When researching Linksys routers, I see both wireless routers and access point devices... what is the difference? Thanks in advance

A wireless router is a router with a built-in access point. An access point is just an access point; it allows wireless clients to connect to the local network, but doesn't route packets between two or more networks.

Wireless routers are useful in home or small business type arrangements to save cost where the router can be physically located near the Internet access wiring drop to the location and yet still have the wireless range be able to cover the desired area. In larger business installations, a non-wireless router would typically be located in an equipment closet often far removed from where wireless network access is desired. One or more discrete access points would then be installed and connected to the wired lan to provide wireless coverage in the desired area.