Heh thanks - that is really helpful to hear. I was wondering which post processing software to buy. Most people had pointed me to Photoshop as opposed to Lightroom. I haven't tried either. I was pointed to a new software called Affinity Photo which I have trialed and been quite impressed by. I will try your specific suggestions.
I highly recommend Lightroom. The alternatives to Lightroom can be alright, but it's still the best thing out there right now. If you subscribe to the monthly cloud deals they have, I think you can get certain software bundles (but I can't afford that -- I just have a standalone download).
Photoshop is for a different purpose. I use both Lightroom and Photoshop, but I use Lightroom 99% of the time... and photoshop 1% of the time. Photoshop is more complicated, and isn't necessary for most people. It isn't better either, it's just a different tool with certain overlapping features.
You'll need to shoot in RAW to get full control in Lightroom. RAW stores the most data.