LittleText1.html

This anchor tag pair:
<a href="LittleText2.html" target = "_blank">This sentence is a link to LittleText2.html. </a>

creates this link:
This sentence is a link to LittleText2.html

which opens the LittleText2.html file. Note that the the target attribute causes the file to open in the window of a new tab.