By default, LaTeX produces professional-looking documents. Specifying an extra couple of packages, however, can make your document look even better. Here are four packages I recommend that require no effort, by which I mean you simply add the package to your preamble (and maybe specify a few options) and you’re good to go.
Before leaving high school, every scientist should have learned all the things a graph should contain: a descriptive title, labels for every axis, appropriately spaced tick marks, and a legend if necessary. All pretty straightforward, so you would think any figure published in a scientific journal would adhere to this as a minimum. But I’ve come across far too many figures breaking one or more of these rules. The problem is not that people are excluding the information, rather they are putting everything in the figure caption. Consequently, the figure caption ends up being long-winded, procedural, and not at all interesting. Fortunately, it is easy to make the caption succinct and descriptive with a few quick adjustments to the figure.