I'd recommend this book from Glen Weldon of NPR's Pop Culture Happy Hour podcast. It's called "NPR's Podcast Start Up Guide: Create, Launch, and Grow a Podcast on Any Budget". You could also likely borrow it from your local library. Speaking of libraries, I'd also recommend checking out what resources they have for podcasters. In my city the downtown library branch has a podcast studio that has all the equipment that patrons can reserves space/time in. This would allow you to begin making content while still setting up your own personal equipment.
I don't personally make any podcasts, but I listen to an absurd amount of them. I will agree that having some content, or at least a "pilot" episode would likely help you in your fundraising. There are soooo many podcasts that begin and then quickly fall off of producing content on a regular basis, that many people aren't open to supporting new ones until they prove themselves as reliable in that area. That doesn't mean you have to make something every week or every month, but having several episodes already produced so that you could have enough for a "season" would likely help in growing. At a minimum having one pilot episode could help in fundraising as it would let people know a bit more about what they are supporting and give them an idea of the type of content you'd be making moving forward.