What do you do this <td>

Answer 1

it is used to create a regular table cell

like creating a 2×2 table
<table>
<tr>
<td></td>
<td></td>
</tr>
<tr>
<td></td>
<td></td>
</tr>
</table>

<table> - is used to initialize the table
<tr> - is used to add row in the table
<td> - is used to add cells in the row of the table

Answer 2

good straight breakdown of the table