How to replace router?

[#1]

Sorry if this is a real noob question but I don't really know much about networking and I haven't been able to find the answer from here or from the support site.
I want to replace the Technicolor router that came with my fibre connection with a gigiabit wifi router, probably the R6250. How do I actually go about doing this? Do I just plug the OpenReach modem into the router by the ethernet cable and I'm away or is there anything else I need to be aware of?
Just want to make sure my bases are covered before I take the plunge!

[#2]

Hi andersll,
Welcome to the Forums
What's the make and model of the router?

[#3]

Hi Chris, thanks!
I was looking to get the Netgear R6250: http://www.netgear.co.uk/home/products/networking/wifi-routers/R6250.aspx

[#4]

All you'll need to do is connect the router up to the Openreach Modem as your current router is already.
When you go through the router setup, a couple of important things you'll need:
Username and Password to authenticate your account details through your new router.
The username will be:
Username: username@plusdsl.net - the first part of this would be the account username you use to log into your Member Centre
Password: Your Plusnet account password
I hope this helps

[#5]

Awesome, thanks Chris!