1. How to skip spaces? Put this code
<br><br>

2. Insert a link
<a href="LINK HERE">TEXT HERE</a>

3. Insert a image
<img src="DIRECT LINK IMAGE URL HERE">

4. insert an image with a link
<a href="LINK HERE"><img src="IMAGE URL HERE"></a>

5. Bold text
<b>TEXT HERE</b>

6. Italic text
<i>TEXT HERE</i>

7. Underlined text
<u>TEXT HERE</u>