Study the market, what is out there. Now what are you most interested in. Find the gap that is out there and fill it. Every second podcast is two fans lazily talking about their sport or team. Most of the rest are interview shows. So unless you think you can interview people haven't, or can do it better, what can do you? History? Coaching? Stories? Narrative? News?

I'm pretty self taught with podcasts, so resources I don't have many. Tools, my biggest advice would be get a decent microphone, make your recording space quiet. But also there is something I love using called descript (I have a podcast producer, so he actually does the editing for me on the pods, Hi, Nick). But on the videos I use decript, You can automatically take out all the ums. It allows you to automatically shorten all gaps. It also transcribes it for you, so you can listen to the track but edit off the transcript if you want. It's not that expensive considering the huge advantage it gives you.

I am not sure there is that much different I would have tried. Red Inker works exactly as I always hoped it would, I purposefully didn't want it to be famous people, because they are harder to wrangle. So I leant into experts and writers, knowing that meant it would be a slower grow, but I'd always have good content. My thing was a podcast was to make it as easy to sustain as possible, because I have busier times in my work. So that one works pretty much as I'd like. I have never missed a Wednesday release (this is way more important than you'd think) because of this, and by making my episodes timeless, I can record a bunch and just release them whenever.

Double Century is more work than I thought, partly because I went a bit OTT with it. But I like the idea of podcast series, because when you have time, you can devote to it, and when not, you can let it slide a bit.

My overall tips would be, find a thing no one has really nailed or done and make it easil repeatable, get a decent mic, and use descript.