Okay so I'm new to owning Nissan's!

Recently my car began to idle rough and run hard. She would shake while at rpms below 3k. We discovered it was a broken mount, specifically the top left rear mount. The whole thing is gone, like we didn't even know it was the mount because the mount didn't just break away, it broke OFF!

We also discovered that she needs at least one coil pack, it is sparking up the entire side instead of just down in the plug. So what should I look for price/info wise?

When we had the codes read it said we needed O2 sensors, so she is needing just a bit of work.

I need someone who can tell me about all this, I want to be able to learn how to do it myself! My husband works nights and is always tired, so if I can do it and save him some rest I'll get out there and get my hands dirty no problem!