Configuring Apache/PHP/MySQL for Low Memory (RAM) VPS | NARGA https://www.narga.net/optimizing-apachephpmysql-low-memory-server/
vps – PHP-FPM eating memory & Creating many Pools – Ask Ubuntu https://askubuntu.com/questions/393067/php-fpm-eating-memory-creating-many-pools
How To Configure Virtual Memory (Swap File) on a VPS | DigitalOcean https://www.digitalocean.com/community/tutorials/how-to-configure-virtual-memory-swap-file-on-a-vps
10.04 – How can I disable postfix on startup? – Ask Ubuntu http://askubuntu.com/questions/231402/how-can-i-disable-postfix-on-startup
git – Best way to use multiple ssh private keys on one client – Stack Overflow http://stackoverflow.com/questions/2419566/best-way-to-use-multiple-ssh-private-keys-on-one-client
rebuild vs restore | DigitalOcean https://www.digitalocean.com/community/questions/rebuild-vs-restore
Frequently Asked Questions – Technical | DigitalOcean https://www.digitalocean.com/help/technical/setup/
Setup mail server on ubuntu 14.04 ( Postfix – dovecot ) http://www.krizna.com/ubuntu/setup-mail-server-ubuntu-14-04/
How To Set Up Apache Virtual Hosts on CentOS 7 | DigitalOcean https://www.digitalocean.com/community/tutorials/how-to-set-up-apache-virtual-hosts-on-centos-7
How To Set Up Apache Virtual Hosts on Ubuntu 14.04 LTS | DigitalOcean https://www.digitalocean.com/community/tutorials/how-to-set-up-apache-virtual-hosts-on-ubuntu-14-04-lts
server – How can I host a domain/website on my new VPS? – Ask Ubuntu http://askubuntu.com/questions/124261/how-can-i-host-a-domain-website-on-my-new-vps
web hosting – Add domain to VPS – Webmasters Stack Exchange http://webmasters.stackexchange.com/questions/17911/add-domain-to-vps
How-to Setup a VPS to host websites. – VPSTutorial.com http://vpstutorial.com/setup-a-vps-to-host-website/