Don't Starve Together is a game where you constantly die from ignorant mistakes. But that's ok, because every time you die, you can clean the slate and try again. Unless, of course, you are on someone else's server. In that case, you better enjoy spending your time as a ghost or find some way to survive on someone else's server.
#1: Survive! Edit
Although this may seem like an obvious tip, survive! More importantly, survive by yourself! Someone else's base may be far away from the Florid Postern, so you may not be able to get there on Day 1. Instead, prove your worth out in the wilderness and eventually stumble across the base, or just make your own!
#2: You're not the Boss Edit
Remember how you are in charge of every move you make? Well not any more, because this person probably knows more than you. When they tell you to leave the base and follow them, leave, because they are probably taking you to a better base.
#3: Check the Season Edit
This may seem like an obvious one, but check the season of a server before you join. Don't join in Winter or Summer, because the temperature will kill you before you have time to make a proper base.
#4: Stay Close Edit
To avoid constant death in a new server, stay close to experienced members. Unless they are going off to fight the Ancient Fuelweaver or something, they will most likely keep you close and protect you.
#5: Offer Your Services Edit
Playing Wendy? Summon Abigail. Playing Wickerbottom? Read some books. Playing Maxwell? Summon some shadows. Play as a character who hasn't joined the server yet, and offer your unique services to both bolster your chances of surviving and make everyone think you're a good person to keep around.
#6: Practice Shadow Fighting Edit
Shadows become hostile when your sanity gets below 15%, and they can be really dangerous. However, they can be really easy to kite one-on-one, so practice doing so to avoid being 'That guy who is always going insane and dying.'
#7: Hit the Restart Button Edit
If everything is going the wrong way, suggest to the server owner that you rollback. The server can be rolled back in the case of arsonists, anarchists, or griefers. If the owner refuses, remember there is always a huge number of servers online, so choose another one of them, or just host your own!