Here are some tips regarding the latest wireless ('WiFi') router offerings. WiFi standards have been simplified to six versions, currently 1-6:
802.11b is now known as WiFi 1 – Obsolete but supported at up to 11 Megabits per second (‘Mbps’). Good for audio and basic web surfing.
802.11a is WiFi 2 – Obsolete but supported. Yes B comes before A; it is a long story. Runs at up to 54 Mbps.
802.11g is WiFi 3 – A little newer and runs at up to 54Mbps. Good for web surfing and basic streaming.
802.11n is WiFi 4 – Runs at a up to 450Mbps. Good for pretty much any use.
802.11ac is WiFi 5 – Current standard. Can exceed 1 gigabit per second in certain configurations. Good for everything including HD movies, gaming, and 4K UHD video streaming.
802.11ax is WiFi 6 – Latest and greatest. Sure to be the holiday sales rage but be careful. The final version of this standard won’t be fully ratified until late 2020, however. Very few devices currently support this. All devices that do are fully backwards compatible though. Without an 802.11ax card, the device will run at the slower 802.11ac or 802.11n speeds, but most home networks can't keep up with the speeds it offers anyway.
When setting up a new wireless router, be sure to change the default password and set it so that it’s configuration interface is only accessible from your internal home network. Also be sure to setup a good pre-shared key for use on your devices.
Additionally, check with your cable or ISP provider for the best cable modem (disregard if you have Verizon FiOS). Many people replace their modem only when they break. Modem standards change and are getting faster and more reliable. Current internet modems are at least ‘8x4 channels’ and ‘DOCSIS 3.0’. The current top of the line modems are labeled 32x8 DOCSIS 3.1. They sell for around $150.