I want to host a Dedi at some point in the future. Until then I'll use remote hosting. What games do you guys recommend I host? I've hosted and played Minecraft before but I don't really know MySQL so complicated MMOs like a Private WoW Server etc is a bit much. I do remember when CS Portable was around on a Unity platform. If I were able to then I would ruin a server of that. Doesn't necessarily have to be a completely relevant game type. I like FPS games, Adventure games, RPGs and Building games like Minecraft.
TL;DR
What games can you suggest for me to host that are worth while and/or good to learn the trade?