Progression as a new player

As a new player at which point should i start worrying about farming/collecting more warframes/weapons?

Bit of a background im new to the game and the genre practically, chose Volt as my start warframe and i got hooked pretty good and love the gameplay and story/quest progression.

However im getting to a point where i die a bit during missions and some time its tough to kill some enemies (as a reference i just unlocked jupiter junction so i believe im still way off the end game at this point)

So my question is should i worry now about upgrades or getting new warframes and better weapons or is it still early for me to think about this?

And is there a guide where its tells you at which breakpoints in the game where i should start investing time in farming for specific gear/frames for better progress? Or i can just wing it till end game and start after i reach it?