Home Network – 2 Routers and a 8 port switch

I seek some professional advice I have 2 Routers, 8-port switch.
What i am trying to, is understand the following.
Router 1 – Main Router – Modem to Router 1 = WAN From Router 1 to Router 2 Do i attach the Lan cable to the WAN Port or to one of the other 4 ports ?
And finally can i attach a Lan Cable from Router 2 – one of the 4 ports to the
8 – port switch…And do both Routers maintain the same static Ip addresses Ie (192.168.0.1) – (192.168.0.1) ???
Thank you for taking the time to answer these question much much appreciated in advance !