Tenth run, finally something clicked... The hell I do now?!

Hello, I've had this game for a while and tried it several times. Died horribly even in easy mode (Moon & Mars)

I tried again last week, the game does tickle my fancy even if polish is nonexistent...

So I got on Mars, Easy. New run. Got the extreme basics down, a working autolathe and some lockers, good. Then I have a realization: Screw the arc smelter. I made a furnace immediately, I had steel by the first night. Got a battery pack, solid gen, finished off the workshop.

For the first time, I have a fully working and stable electric grid, all machines, and a working furnace.

I made Electrum and Solder too, but now I have a few questions:

1- Couldnt find nickel anywhere. Are the spawn restrictions? Mars Finders Canyon.

2- Any way to decently check in-game what I can build with my new alloys? The F1 menu says "used in autolathe" yeah thanks, but for what?!

3- I suppose an actual airlock and controlled atmosphere is next? But I'm wondering, do I get any upgrades like at all? I'm still using starter gear other than an improved jetpack.

Note - I do not and will not look for an online wiki... The game should give me all needed info, but it's not. So I'm asking here, hoping to get some ways to find this info in-game.