Wix.com and YouTube videos.
If you are new to hosting business and has no knowledge about web hosting services and support, I would suggest you to check reseller hosting services. Here the web host will provide you full support.
If you can handle your clients on your own, then go for highly configured dedicated serves and start selling your server space on your own price.
For best Reseller hosting and dedicated hosting services I would suggest you to check Scopehosts.com , very affordable and highly configured.