A common question asked is does SEO require coding?
The short answer is, no, although the longer answer is, it won't hurt.
Generally, unless you plan on creating your own website, you'll leave the coding to the experts, and instead plan on understanding the more important things such as how does the Google algorithm work?
The more you understand how Google ranks your website, the sooner you'll be able to improve your SEO rankings.
How fast does your website load? Is it mobile-friendly? How valuable is your content?
Do you have backlinks that provide social proof to customers? How new is your content? Did you know Google values fresh content within the last week or two rather than two or three years old?
Is your website marked up properly? Here is the exception to the rule about coding. Google will reward your website for being coded properly.
How unique is your domain name? Exact match domains carry real weight. If you sell widgets, then try to grab widget.com to capture the lion's share of search traffic.