Yes, it is. You can manage it by logging in to the server via RDP. It is just like you operate your local operating system (Like Microsoft Windows 10/Linux Ubuntu/Cent OS etc.).
You need to have a basic tech skill to manage VPS and yes, control panel will make your life easier
Yes, absolutely. You can easily manage your VPS with the help of user-friendly control panels. For Linux VPS, there are plenty of paid and free control panel options are available, such as cPanel/WHM, DirectAdmin, Plesk, InterWorx, H-Sphere, CentOS Web Panel, ISPConfig, Ajenti, Kloxo, ZPanel, etc. The control panel allows customers to manage their websites, DNS records, FTP accounts, email accounts and databases through a single login and easy to use GUI.