I booked my girl for a hair cut as soon as I brought her home at 8 weeks. As Stella (GR8DAME) stated, the earlier you can get her exposed to being groomed the better. When we lived in SC, I took my girls to a wonderful small time groomer that took time to love on them while she had them in her care. But now that we are in IN, my SIL used to be a groomer, therefore, I have access to professional tools and have gotten to practice grooming her myself. Now I'm not to shabby at it!
Dazy will now get onto the grooming table by herself, and after I cut her hair, I slide the table over to the tub (which is a raised tub specifically for grooming) and she climbs in and sits or stands (depending on the command I give her) for bathing. When I finish bathing her, she steps out of the tub back onto the grooming table and I dry and brush her out there. Sorry I wrote a novel, but the moral of the story is.... ASAP.