You need to boil water for your tea. You can do this by using a hot shot, water boiler, or stove. Keep in mind that different types of tea will result in different water boiling temperatures.
Add a teabag of your choice to either a cup or mug.
Carefully pour the boiled water into your cup.
You need to let your tea steep so caffeine and flavo can be extracted from the teabag. Different types of tea require different steeping times.
This step is optional, but if desired you can add milk or sugar into your tea to improve it's taste.