optimum
It isn't difficult. I pull while checking e-mails, feeding the dog, & preparing my lunch for work in the morning. I use Coconut Oil. On the first day, I blew candida threads out my nose. After 1 week, my tongue is no longer "white".
Some people start pulling for 5 minutes and work their way up to 20 or more. People are using all types of oils (olive, sesame, pumpkin, coconut, hemp, sunflower, soy, almond, avocado, macademia, etc.).
Check the oil pulling forum for more details.