My list includes
- Reading: I learned most of what I know about code from reading books/articles/blogs/etc. I try to sharpen my skills when I have the moment
- Enki: Reading is great, but it can be boring. Enki (a code skills app) makes it fun to learn new skills
- Enterprise Exploration: I am always learning about new products and services that are offered by my company outside of the products that I work on. It helps me understand the broader ecosystem of my company and our industry.