These are products I use and recommend.
(These are affiliate links, so I will earn commission if you signup)
Famewall - Testimonials
Social proof is one of the best way to promote your offerings.
I simply send people a link after a course, workshops or coaching engagement, and famewall does the rest.
I love to tool, so easy to setup and use.
Ghutam and the teams are super responsive to support queries as well!
Bright Themes - My website theme
Ghost - Website CMS and Hosting