I am writing a paper and in conjunction with the paper I want to submit a Mathematica file that shows the numerical calculations. But I want it to follow in order of the paper. I know this is probably a silly and easy question. How do I enter text without using the Text command? In other words, how do I get the use Mathematica as, say, a word document in which I can then input commands after? Sorry for the basic question but I don't get it.
You can select a cell and do Format > Style > Text,
or you can directly right-click on a cell bracket,
or you can convert or generate a new text cell by the keyboard shortcut Alt+7.
Also, in version 10, you should see a popup prompting you to convert your cell into a text cell when you start typing something that looks like a sentence, even in an input cell: