What device are you using for your network (wireless a, b, g, n, or ac?)
What device and OS are you using to connect to the wireless network (laptop? phone? desktop with a wireless adapter? windows XP, Vista, 7, 8, linux, android, iOS, OSX?)
Most devices use DHCP so there are no network setting to mess with. Simply look for the available wireless networks, click on the SSID (network name) that belongs to you, select "Connect", and then enter your wireless key (password). That is typically all that needs to be done, but we need more information to help you further.