Find and waypoint a Trade Station or a trade terminal POI as soon as possible on your first planet... Once you have a ship, stock up as much as you can at a space station and basically use that plutonium just to make some money so you can go back and stock up more: explore, sell faction items, go mine... Just invest that use of plutonium in being able to afford even more plutonium -- don't go use it to go explore or search for crashed ships or something. Worry about your resource stockpiles, first. Only things you probably should spend money on are inventory slots to carry more resources/loot to sell, or buying resource stockpiles. Don't worry about other stuff and you feel like you constantly-without-fail always have a full ship slot of plutonium and zinc, and at least an inventory slot of thamium9 or power recharge cells.
Sell some of your faction items like Korvax Casing, Vy'keen daggers, too. By mid/end-game you'll be swimming in them with maxed factions so take advantage of them early on to ensure your survival; you can worry about factions once you don't have to worry about constantly dying from getting stuck with plutonium on dangerous planets. Especially non-Korvax ones IMO because I think your priority should be the Korvax ones to get the weather shields because they make a huge difference. You should try turn in many of them, most if possible, but if you
gotta choose between having
any back-up plutonium/zinc/thamium9 reserves or turning in a couple extra geknips or vy'keen daggers, then sell 'em~
Planets can find pretty creative or unexpected ways to try kill you... my general rule is never ever leave a space station to go to a planet without at least 1 stack of each critical resource.
Don't ever land somewhere new unless you know you can fly off again immediately again; unless you have enough zinc to survive a few minutes in a storm in case you jump out your ship into a sinkhole you never saw and it forces you to find an exit far away and run around out on a nuclear storm lol; or to survive weather/sentinels while you collect materials in case you somehow did forget to fix/charge your ship. Sell whatever you have to or even try buy/sell low/high in space stations until you can afford it. Don't leave the safety of the space station and teleport travel (stations and base) until you can survive any of the risks of interplanetary flying/on the planet.
My first 50 hours or so I stuck to Space Stations and Trade Stations like a bee to honey haha. Try imagine all the bad/odd/unexpected shit that can go wrong on a new planet, make a checklist to avoid/mitigate each, and then once you've prepared items for each, then go explore
It's kinda strict and more for Permadeath but it's a good rule of thumb to avoid losing your shit in Survival, too heheh.