It's about exploration and interaction with other players - yes you can look online to find a mobs location. OR you could have explored yourself and have a vague idea of most mobs locations (as it already tells you the zone), ask a friend or even shout within the zone for their location - a lot of the time someone will reply within 30s to a minute, I always take time to give a rough location when I see a request.

As to mods, I doubt any mods will be officially sanctioned by SE, however if the game continues to garner enough attention I am sure a few unsanctioned client side mods will pop up here and there (however this is risky as bots are also client side mods).