我不知道一步一步我肯定一个扎实的谷歌会产生一些东西）。

1）创建一个 UserProfile 模型来保存额外的信息并放置它在你的 models.py 中。它可能看起来像这样：

  class UserProfile（models.Model）：
＃由auth模型请求
 user = models.ForeignKey（User，unique = True）
 middle_name = models.CharField（max_length = 30，null = True，blank = True）
 pre> 

 2）通过添加此行（使用适当的名称）告诉您的新课程 settings.py  ：
  AUTH_PROFILE_MODULE =myapp.UserProfile
 
 3）添加一个信号侦听器以在添加新用户时创建一个空白的 UserProfile 记录。您可以在这里找到一个很棒的片段。
 

 4）处理新用户记录时，您还可以填充 UserProfile 记录。这是我如何做插入（注意 get_profile ）：
  if（form.is_valid（））：
 cd = form .cleaned_data 
 user = User.objects.create_user（cd [UserName]，cd [Email]，cd [Password]）
 user.first_name = cd [FirstName] 
 user.last_name = cd [LastName] 
 user.save（）
 #Save userinfo record 
 uinfo = user.get_profile（）
 uinfo.middle_name = cd [MiddleName] 
 uinfo.save（）
 
这就是它所有。这不是全面的，但应该指向正确的方向。
 

 更新：请注意， AUTH_PROFILE_MODULE 自v1.5以来已弃用： https ：//docs.djangoproject.com/en/1.5/ref/settings/#auth-profile-module  
 
I am using the create_user() function that Django provides to create my users. Also I want to store additional information about the users. So I tried following the instructions given at 

http://docs.djangoproject.com/en/dev/topics/auth/#storing-additional-information-about-users

but I cannot get it to work for me. Is there a step-by-step guide that I can follow to get this to work for me?

Also, once I have added these custom fields, I would obviously need to add / edit / delete data from them. I cannot seem to find any instructions on how to do this.
I am not aware of a step by step(though I am sure a solid google would produce something).  But here is a quick go at it.

1) Create a UserProfile model to hold the extra information and put it in your models.py.  It could look something like this:
class UserProfile(models.Model):
    #required by the auth model
    user = models.ForeignKey(User, unique=True)
    middle_name = models.CharField(max_length=30, null=True, blank=True)
2) Tell your settings.py about the new class by adding this line (with the appropriate name):
AUTH_PROFILE_MODULE = "myapp.UserProfile"
3) Add a signal listener to create a blank UserProfile record when a new user is added.  You can find a great snippet with directions here.

4) When processing the new user record you can populate the UserProfile record as well.  Here is how I do the insert (notice the get_profile):
if (form.is_valid()):
    cd = form.cleaned_data
    user = User.objects.create_user(cd["UserName"], cd["Email"], cd["Password"])
    user.first_name = cd["FirstName"]
    user.last_name = cd["LastName"]
    user.save()
    #Save userinfo record
    uinfo = user.get_profile()
    uinfo.middle_name = cd["MiddleName"]
    uinfo.save()
That is all there is to it.  This is not comprehensive, but should point you in the right direction.

Update: Please note that AUTH_PROFILE_MODULE is deprecated since v1.5: https://docs.djangoproject.com/en/1.5/ref/settings/#auth-profile-module