On your Linode
go to DNS Manager Tab then add a Zone and enter the following requirements Domain - YOUR_DOMAIN_NAME Email address - YOUR_EMAIL
A/AAAA Records Add a new A/AAAA record and put in Domain name and the ip address of your VPS.
On the domain website go to DNS settings and change the name server to this and put the following
On your VPS
sudo apt-get update
sudo apt-get install apache2
(check the VPS IP address in the address bar to see if apache web server has worked correctly)