Legacy Code

apparently the number one thing you can do is read that on book about maintaining legacy code.

but also here's a blog series I like on the topic:

How To Read A Code Jonas Lundberg

1. https://www.iamjonas.me/2020/08/how-to-read-code.html
2. https://www.iamjonas.me/2020/11/how-to-own-code.html