Let's share our "I wish I had known…" stories. For me - a microphone! I bought a decent microphone way too late and I spent countless hours fixing audio that could have been "fixed" with a better microphone. I was able to get good results in Audacity but I spent hundreds of hours editing sth that was later "sorted out" by using a better mic. I even re-recorded most of these courses using a better microphone.
What about you?
