My LO is due in September and we are using bumgenius newborn diapers and then freetimes.

I've got both used and new diapers what do I need to do to get them ready? What about once baby's here, how do I clean them?

I realize I'm a total newbie so tell me how you do it but here's where I have researched so far.

It looks like from here: http://www.cottonbabies.com/blog/2011/06/cloth-diapers-101-how-to-prep-your-cloth-diapers.html
I just need to wash them once and they'll be ready to go.

To wash them (http://www.cottonbabies.com/clothdiapers.php#detergent):
1.Cold wash with detergent
2. Warm or hot wash with detergent
3. Extra rinse
I thought I'd read online only one wash needs detergent but that Is not what this is saying. Please HELP!