My sister is having a baby but does not want to keep him or her. My husband and I are adopting the child but we want to do the process without having

Without having what? Regardless of how well everyone is getting along, you really should have all the paperwork done by someone knowledgeable about adoptions.  And you do have some decisions to make as to the kind of adoption you want to have.  For background information, and to review the decisions you have to make, see the information posted at http://willicklawgroup.com/adoption/.  If you are determined to go ahead without counsel, you can find forms for many family court procedures at http://www.familylawselfhelpcenter.org/.