You don’t need much to build and run a simple business, but these are the tools I use in my own business and often recommend. (Just a quick note that this page contains some affiliate links.)
Web hosting – SiteGround is great, especially for WordPress hosting, and has a reliable live chat for support (which has saved me more than a few times when I’ve broken things).
Web domains – I usually buy domains from Namecheap or SiteGround (this keeps things simple as my hosting is there too).
Accounting software – I’ve used Xero for the last few years and love it. It’s really good for UK-based businesses. If you’re in the US, look into QuickBooks and FreshBooks. Now I’m in Denmark, I use Billy.
WordPress theme – Kadence WP is fantastic (and fast) for WordPress websites. Their free version should give you everything you need for a simple website, but you can upgrade for a wider range of themes and add-ons.
Course creation – I use Kajabi for hosting courses, online products, podcasts, and sending emails for Live Wildly. It’s definitely not the cheapest but probably the best. If you’re on a budget, start with a cheaper option and you can always switch to it later.
Email providers – I use Mailerlite for Tolstoy Therapy emails, which is low-cost and covers everything I need. It’s free for up to 1,000 subscribers which is great. ConverKit is another solid choice with lovely user experience (and now offers commerce features to sell digital products too).