For definitions of terms see Plumbing Glossary . It's always a good idea to use gloves and goggles to avoid contact with bacteria and chemical drain cleaners.
Cleaners can be harsh to the skin and damage eyes.
Don't use a chemical drain cleaner before trying mechanical methods. Nonetheless, unclogging a toilet can be easy, not fun, just easy. Extend the fluted flap of the plunger, fit it tightly inside bowl drain to form a good seal. Plunge up and down several time and quickly break the seal. Repeat this a few times to work the clog back and forth and eventually free it.