A lot. The certification is a certification, you must create a portfolio of sites or programs to Github to prove that you know.There are a lot of online schools. You can be certified for many like:
WordPress
Joomla
Drupal
CodeIgniter
Laravel
PHP
HTML
CSS
MYSQL
JS
Photoshop
Gimp
Magento
Moodle
and more
and more. There are technical sites and university sites. I have followed courses from the:
OStraining (CSM tech)
Joomlashack (Joomla)
VTC (good summary courses)
Eduonix
Udemy (pay and have the course forever + updates)
You must decide your area, check the market, and study.
