Microsoft Word 2013 - How to make double column list
If you have two columns, and would like to type in the second, you can use the keyboard shortcut Ctrl+Shift+Enter (called a Column Break) to begin typing in the second column. This will allow you to keep adding content to the first column independently, providing they do not spill over into each other.
Alternatively (this may help future users, even though not you) you can go to Insert, Tables, and Insert Table... For the number of columns put two, for the number of rows put one. This allows you to keep typing in the box, and as you reach the end of your line it automatically drops down to the next. If you do not want to keep the lines outlining the columns, right click on your table, go to Table Properties, Borders and Shading, and select "None" under settings in the Table tab.