SkillsGrind is a minecraft server hosted on the platform minehut when you will join the server you will receive a "guide's letter" with a message in chat explaining that you need to choose one of the places you can go they are currently 4 places :
the forests, the dungeons, the farms and the mines. If you need help to choose one of these here is my advice :

Choose the forests to get better axes and most likely do more damage to mobs

Choose the dungeons if you are well equipped and want to fight mobs to get loot and coins

Choose the farms if you need food and better scythes

And finally, choose the mines if you want more protection