Ordered list
The tags used here are <ol> and </ol> to indicate the ordered list, and <li> to indicate the to be listed items. The definition looks like this:

<ol>
Map types produced by "LovelyMaps"
<li>tourist maps
<li>location maps
<li>route maps
<li>imaginary maps
</ol>

This is the result:

Map types produced by LovelyMaps
1. tourist maps
2. location maps
3. route maps
4. imaginary maps

Within this list a so-called "nested list" can be made, in tshe same way as described for the unordered lists. To get somewhat more structure in the ordered list, a "type" description can be added in the <ol> tag, like <ol type=i> indicating that the numbering uses i, ii, iii etc. When using the tag <ol type=I> the capital version will be used.

<ol>
Map types produced by "LovelyMaps"
<li>tourist maps
<ol type=i >
<li>monochrome
<li>colour
</ol>
<li>location maps
<li>route maps
<li>imaginary maps
</ol>

With this as a result:

Map types produced by LovelyMaps
1. tourist maps
   1. monochrome
   2. colour
2. location maps
3. route maps
4. imaginary maps

Action
Create a list of different products "LovelyMaps" produces and try to get the code correct. Add tags as <bold> <size> etc to elements of the list. After typing it in the HTML file, check it in the browser ...