| 1) I read a bit about NGINX and setting up pools to set up multiple websites. If I do this and transfer everything over, will it be faster than on a shared plan?
Most likely if configured well it will be but since shared hosting providers vary a lot in terms of how much they oversell, what machines they run their services on and what types of network connectivity they feature there is no way to guarantee this completely.
If you choose not to use a control panel, this guide will walk you through configuring your sites in Nginx.
| 2) Will my emails also be transferred? I have emails with the domains which are important to me
If you install and configure an email server and transfer them they would be. Running your own mail server is much more complicated and time-consuming than hosting web services. For this and other reasons we recommend against self-hosting email.
| 3) Can I use another cpanel alternative and transfer it like that instead? will that be easier?
You receive full root access to your droplets and can install whatever control panel or other software you like. Transferring from shared hosting to another instance of cPanel or VestaCP would likely be an easier process but troubleshooting when things go wrong can often be more difficult with a panel as they often use their own custom configurations, file locations and other settings which can make solving problems more difficult when they do arise.
When setting up a web site or application under your own domain, it is likely that you will also want a mail server to handle the domain's incoming and outgoing email. While it is possible to run your own mail server, it is often not the best option for a variety of reasons. This guide will cover many of the reasons that you may not want to run your own mail server, and offer a few alternatives.