Solo Founders – What resources helped?

I’m about to embark on the solo founder journey and I wanted to get feedback from others who have experience starting companies in the Web3/ Blockchain/ DeFi space - what resources actually helped you? Obviously there’s tons of resources out there, but which ones in particular did you find helped you learn the industry, regulations, file the paperwork & take care of business?

Example https://www.singlefounderhandbook.com