Trends.co is a newsletter, provider of trend analysis reports and a community of entrepreneurs looking to help one another, and share ideas about how to grow their businesses. There aren't many places where founders of nine-figure companies offer their thoughts on your business plans or random business ideas. I've made many fantastic connections during my time there, and cannot recommend it enough.
WPMU are my web host provider. They also provide a lot of the speed-enabling and security software that is used on all of the websites that I build. I share this link in case you've come here and decided that you want to try and build your own site - this is who I would recommend doing it with if that's the case. Also, no hard feelings!
ConvertKit is mailing list software, and is free for up to 1,000 subscribers. It's also the best softwar I've come across in terms of delivering emails straight to people's inboxes, rather than junk folders.