I'll soon start as a web dev intern, I'm looking forward to it, though I'm also a bit anxious/insecure about it.

Do you guys have any tips for my intern period etc?

I help first year Computer Science students at my uni. In the first few weeks I reviewed someone's code to find he had 253 variables called var1, var2, var3 and so forth. The even worse part: he made the same if-else structures for every variable without using a loop.

if (var1 == something) {
//huge chunk of code here
}
else if (var1 == something) {
}
else {
}

... var2... var3

The funniest thing about this is that we had a discussion about this, because he claimed this was the right way to solve his problem.

When the configuration files are bigger than the code you're writing.