When it comes to upgrading your warframe you must know the fundamental basics when choosing which upgrades to use. the following mods below affect the survivability of yout warframe

Note: The mod redirection is only useful if the warframe has shields of atleast 250 and only use steel fibre when the frame has a lower shield count or has high armor stats

Whether your role in the group is crowd control, Healer/buffer, enemy de-buffer or a mob exterminator your abilities will matter at the end of the day, depending on how you upgrade your frames ability is the main question. the following mods below directly affect your warframes ability's strengths and uses available

When it comes to upgrading weapons this is much easier to upgrade rather than warframes. since the game Warframe is where DPS is king basic mods that increase base damage and multishot is a no brainer so use the mods below as a baseline to start off

The mods that only have primed counter parts is pressure point and point blank. so if you come across Baro ki teer selling it then purchase immediately, another thing to note when modding weapons, avoid using mods that only target specific enemy types as they arent useful in any way