That's it, if the router and computer are set for DHCP by default, as most are. Once you're in, be sure to change the default password
(and login if possible). Also, change the internal (LAN) IP address
for the router. Pick something such as "192.168.n.1", where n equals anything between 2 and 254, like "192.168.22.1". Write down all
of this information; you'll now reach the router in a web browser through that new IP address. If you lose any of these details, follow the
manual's directions to reset the router, often involving holding a button with a paper clip for several seconds.
Many routers let you save your configurations as a file. It is helpful to save each configuration with a unique filename so you can return it
to the last working configuration if something breaks during tweaking. A filename like "yyyymmdd-model" is a good start. You can then
simply reload the last good configuration into the router if something gets broken. Not all backup configuration files may include the
(hopefully) secure password you entered, so double check and reenter it if need be!