While not technically a new player, I might as well be. I played back when Loki was my starter frame, and I don’t remember the planets being locked on the star chart. I have started over on a fresh account to try to learn the game, but holy cow there’s so much going on I am completely overwhelmed.
Do I need to really learn the following systems? Can I ignore any of these until later on, or do I need to focus on some now?
Railjack
Archwing
Void Keys
Fishing
Mining
Building my own weapons/pets/robot companions
Levelling up my Tenno powers
Conclave PVP
Riven mods
Trying to figure all this out while getting mastery ranks to unlock more trades and new weapons is a lot of mental overhead. Also, will there be stuff in the lategame that is more challenging and requires me to actually upgrade stuff? It’s pretty easy so far.
IMO you’re better off without guides. They usually steer you in a pretty specific direction and often focus quite a lot on ‘efficiency’, which might not be the most fun experience for you.
The most important thing is setting goals for yourself. It gives you a solid point to work towards, which helps with motivation, and allows you to determine which parts of the game you can ignore for now, which can help you feel less overwhelmed.
A good goal could be unlocking X planet, farming Y Warframe, completing Z quest, etc. As long as it’s interesting to you, it’s good.
As for learning how stuff works, you should be able to grasp most of the important stuff by just interacting with it as it becomes relevant. If you’re not sure how something works, you can ask in the in-game Q&A Chat.