SaaS Recommendation: Learning about the domain

I have just transitioned into a saas startup. Coming from a non-tech consulting background, saas is a whole different domain for me. I have already been immersing myself in resources online such as podcasts, books, videos, articles and stackexchange newsletters to ramp up my knowledge about this space. However, given the amount of information overload online, I'm finding it difficult to filter out materials. Hence, I'm requesting people of grapevine to recommend me top 3/5 resources I should follow/read to meet fulfil this objective. The aim is to have just 3-5 top resources to fall back on to fill in my gaps about this space and not get overwhelmed my the magnitude of content available online. Any other unsolicited tips will also be appreciated. Thanks in advance!