Setting up router with info from Isp help

Stuck setting up a router like this for the first time.

Isp gave me the following:

IP address

Gateway

Network mask

Dns

DNS secondary

Am I missing something?

If I'm understanding correctly, my WAN/outaide interface would be the Gateway address. I can get the usable range from the ip and mask. Now I get mixed up, Inside interface is the first ip in that range... And a default route of 0.0.0.0 0.0.0.0 to the Gateway address?

Apologies for the newbie question, thanks in advance for any help..