For a Single Cup of Tea: If you're brewing a single cup of loose leaf, you'll need a cup and a strainer. If you're brewing tea bags, you won't need the strainer. Scoop the tea into the cup.
For a Pot of Tea: If you're brewing for a group, you'll need a teapot. A teapot with a strainer built in is the ideal choice but if thats not an option, you can put the tea directly into the pot and strain through each individual glass or place your tea bags directly in the strainer.
Ratio: Use 1 tsp of tea or 1 tea bag for every 6-8 oz. of water.