I am new with wordpress so please feel free to point out any fundamental misunderstandings I have in the following question.
Problem: I have created the beginnings of a website using Html/css, but realized that I wanted to give my client more control over it so I wanted to convert it to wordpress so I can add customizable images/text and take advantage of wp plugins.
Solution: So I changed the name of my index.html to functions.php, and uploaded my index and stylesheet to wordpress. The only change I made was to change the address of my css file.
To correctly link my css file I have changed
<link rel="stylesheet" type="text/css" href="style.css">
to
<link rel="stylesheet" type="text/css" href="<?php echo get_stylesheet_uri(); ?>"/>
Error: However, now my html is just showing up plain without change from css. What am I doing wrong here? (Also if you are experienced with wordpress I would love to message for 5 minutes to clear some misununderstandings I know I have)