Anyone including non-designers can use this framework to analyse a product or service or analyse a piece of work for a potential client. You could even use this to review your own work as the tools and techniques I use leave little room for bias.
When a customer uses a company's products and services to achieve a goal or need, they are going on a journey from point A to point Z. A customer journey map charts the path a user takes from the beginning of this journey to the satisfaction of that need.
Workshops
Customer Journey Maps — Toptal
Knowledge
Typography Elements Everyone Needs to Understand — Gravit Designer Blog
Type design may be intimidating to many, with terms such as leading, baseline, kerning, ascender, tail, and many more … The good news is, there are eight basic, universal typographical design elements: typeface, hierarchy, contrast, consistency, alignment, white space, and color. Even a basic understanding of each of these elements can revolutionize any design project.
Typography
Typography Elements Everyone Needs to Understand — Gravit Designer Blog
Knowledge
The Business Marketing Pyramid That'll Make Freelance Clients Come to You