I just started below zero yesterday and I got a lot of personal survival items including a thingy that makes you go fast and instructions for a life buoy boat smth
My tip- near the start, you'll get a signal to something related to the precursors. Suggest you get that sooner rather than later- what you find has some slight effect on the rest of the game
Pro tip: if you get to the lily pad biome and see a massive dropoff, do not go into it unless your brave because that's the void, I'll link an article to it incase you'd like to read about it
There are some crazy looking creatures that you will come across, and my tip with them is if you don't know if they are aggressive or not, just assume that they are and stay away from them at all costs