To get the caption on the photo like above, go to insert media and on the right add in the text you want as the caption.
Below is set out using TABLES. These are a little more tricky, but handy to know. As you can see you first set the table width then the tag <tr>. This sets the table row. Then <td> which is table data. You can see below <td>CONTENT</td> sets what is in the first column of the table then the next <td>CONTENT</td> sets the next content column. To start a new row end with the tag </tr>. Then repeat to add a new row. Finish the whole table with </table>.
<td>lots and lots of text goes here</td>
|lots and lots of text goes here|
|and here as well|