Have you ever started a new job and found yourself staring at a complex codebase, not knowing where to start? You're not alone. Many of us have been there—tryin

Have you ever started a new job and found yourself staring at a complex codebase, not knowing where to start? You're not alone. Many of us have been there—trying to make sense of outdated code that still runs major parts of the business. A 2024 Stack Overflow survey found that over 80% of developers regularly deal with legacy code, so it's a common challenge in our industry. Most legacy software has its worth, as it is still used and has clients. In the article, we'll talk about the typical problems you might face, like outdated technology, missing documentation, and big piles of technical debt. More importantly, we'll share some practical steps to help you understand and navigate these old systems. We'll also look at advice from experts like Michael Feathers and explore how modern tools, including AI assistants like GitHub Copilot, can make life easier.