Added functions.php and inside this file, I added function that ask Wordpress to show custom-posts on the home and a google fonts link.
Added index.php.
Made testimonial menus on my localhost:8888/wp-admin/ (content-testimonial.php & single-testimonial.php)
Made review menu on my localhost:8888/wp-admin (archive-review.php & content-review.php & single-review.php).
Also, I added taxonomies in the style sheet.