Let’s assume you want a heading at the top of the document that goes across the page then you want the columns starting on the next line.
First you need to know a thing or two about section breaks. Section breaks allow you to have different column settings.
Type the heading of your document. Now insert a section break. To do this, select Insert (from main menu), then choose breaks, and choose continuous (continuous allows a break on the page without making a new page).
Now we are going to set up columns.
Click on Format (from main menu). Select columns. and choose the number of columns you want (in this case you want 2). You can also adjust the spacing between the columns.
Start typing. It will automatically go to the second column when you run out of space in the first one. But if you want to force it to the next column you need to insert a column break (almost the same steps as a section break).
Insert-Break-Column Break.
Once you are done and you want the columns to all be the same length - at the very bottom of the last column insert another continuous section break.
Insert-Break-Continuous - this will even out the columns for you.
If you want to continue the document without columns you would then select Format, Columns (and select one column).
P.S. You can insert pictures in the columns as well.