Install django-photos via pip from the repository:
pip install -e hg+http://bitbucket.org/feuervogel/django-photos#egg=django-photos
It comes with django-pagination, easy_thumbnails and django-taggit.
Add all apps to your INSTALLED_APPS in your settings.py:
INSTALLED_APPS = ( # ..., 'photos', 'taggit', 'pagination', 'easy_thumbnails', # ..., )
Add pagination.middleware.PaginationMiddleware to your MIDDLEWARE_CLASSES and make sure that django.core.context_processors.request is in the list of TEMPLATE_CONTEXT_PROCESSORS.
Run python manage.py syncdb to sync the database:
python manage.py syncdb
Take care that MEDIA_ROOT and MEDIA_URL are set and the files are served.
Finally add photos.urls to your urls.py:
urlpatterns = patterns('', # ..., (r'^photos/', 'photos.urls'), # ..., )
For more information read the (not yet available) docs.