Nobody tells you this part: when you're learning two languages at once, the hardest bugs aren't logic bugs. They're the moments where your fingers type the wrong language's syntax faster than your brain can stop them.
If you're picking up Go while still writing JavaScript regularly, maybe a frontend project in one tab and a backend service in another, here's the whiplash you're probably already feeling, and what actually helps.
The variable declaration trap
JavaScript gives you let, const, and var. Go gives you var too, but also := for short variable declarations inside functions. It's an easy swap to fumble:
// JavaScript
