[Mining]

How do I know which mineral is rare and which one is common?

[Mining]

I've been playing Warframe for a long time, and it's a fun game, but there's something I really hate about the game: I want to craft a moa and to do that I must mine some stuff, and I don't like doing this because of the fact that every time I mine, it feels like I'm trying to win the lottery. I want to know if there's a strategy for mining - if not then can DE make it so mining relies less on luck, I'd really appreciate it

[I cannot get any peace in plains of Eidolon or Orb Vallis]

Especially annoying if I was hunting 

[I cannot get any peace in plains of Eidolon or Orb Vallis]

If I ever wanted to fish or hunt,wether I am in plains of eidolon or Orb Vallis, some random enemies will come and ruin my day as if they wanted to annoy me and make me mad- can this problem be resolved or can I no longer fish or hunt in peace?