I used tofu a lot for cooking.
Most of recipes call for drained tofu. It tastes better too!
There are many ways to press and drain tofu, but this is what I usually do.
Use a Pickle Maker!
It works really well and super easy.
I got this at Daiso (http://www.daisojapan.com/)
Step
1. Open a package and wrap tofu with paper towel.
2. Place in a pickle maker and press,
That's it!
Drain water from time to time.
It's done when no more water coming out from tofu.
It depends, but it takes only an hour or two.
Or if you are in hurry, just cut tofu into big cubes and put them into boiling water.
Cook for about 5 mins and drain. Let them cool and use for cooking!