I purchased the budget friendly TP-Link T2600G-28TS L2 managed switch (affiliate link) for my home network since I wanted to be able to segregate the devices on my network to help address the security concerns of hosting public services and using various IoT devices. (A word of caution: if you are a married man, you may have a desire to accomplish this task without frustrating your wife by adding unnecessary complexity or by excessive network outages while you are building out your network.
I recently obtained the TP-Link T1500G-10MPS Power over Ethernet (PoE) smart switch (affiliate link) to use in my home network. A handful of devices that I currently own support Power over Ethernet. To minimize the cost, I chose the 8-port instead of the 24-port PoE switch. In the long run I probably will not need more than 8 ports, but I may eventually use all 8 ports. I also own the TP-Link T2600G-28TS switch (affiliate link).
For the uninitiated, VLANs are Virtual Local Area Networks. Think of them as logically separate networks that are similar in concept to physically separated networks. The biggest difference is that you do not need to put network devices on physically separate switches or other network hardware. VLANs are both economical and convenient. It is economical since you do not need to purchase extra hardware and convenient since your network devices can be physically located anywhere yet still be grouped in logically separate networks.
One great feature of enterprise ready wireless access points is VLAN support. This feature allows greater control over the flow of data on your wireless network as with wired networks. Quality of service controls may be applied, the broadcast domain of the wireless network may be reduced, and traffic on the network may be isolated. VLAN support on your wireless access point also allows you to extend your wired VLAN networks to your wireless VLAN networks.
As you may have correctly assumed by the acronym, a Virtual Local Area Network is a network that is not a physical Local Area Network. It is a logical network that is created on physical network infrastructure. Rather than create many physically separated networks with its own hardware, VLANs allow for many separate networks on the same physical hardware. See the following physically separated network without the use of VLANs. Each network can be set to a different subnet on the router: