diff --git a/k4ever/buyable/models.py b/k4ever/buyable/models.py
index 959c684..3916bc5 100644
--- a/k4ever/buyable/models.py
+++ b/k4ever/buyable/models.py
@@ -6,6 +6,7 @@ from decimal import Decimal
 
 # Create your models here.
 class BuyableType(models.Model):
+	""" Type/Category for a buyable object """
 	name = models.CharField(max_length=100)
 	
 	def __unicode__(self):
@@ -13,6 +14,7 @@ class BuyableType(models.Model):
 
 
 class Buyable(models.Model):
+	""" Represents a buyable item. """
 	name = models.CharField(max_length=100)
 	price = models.DecimalField(max_digits=8, decimal_places=2)
 	image = models.ImageField(upload_to='img/buyable/')
@@ -23,6 +25,7 @@ class Buyable(models.Model):
 	
 
 	def hasDeposit(self):
+		""" Returns True if the item has deposit. """
 		return self.deposit > Decimal(0)
 	
 	def createPurchase(self, isDeposit=False):
@@ -44,6 +47,11 @@ class Buyable(models.Model):
 		return item
 
 class Order(models.Model):
+	""" Represents an order by the user.
+
+
+	"""
+	An Order object is referenced by all :class:`Purchases <Purchase>`
 	user = models.ForeignKey(User)
 	price = models.DecimalField(max_digits=8, decimal_places=2)
 	dateTime = models.DateTimeField()
@@ -85,6 +93,7 @@ class Order(models.Model):
 
 
 class Purchase(models.Model):
+	""" Represents a :class:``"""
 	order = models.ForeignKey(Order)
 	price = models.DecimalField(max_digits=8, decimal_places=2)
 	isDeposit = models.BooleanField()
diff --git a/k4ever/docs/django/api.rst b/k4ever/docs/django/api.rst
index 72af8c0..66d06a9 100644
--- a/k4ever/docs/django/api.rst
+++ b/k4ever/docs/django/api.rst
@@ -4,15 +4,29 @@ API
  - how to access the read/write/put/create functions
  - what this api does and what not
 
+K4ever has a REST-like API. This means every URL represents an object which has
+four functions: `read`, `create`, `update` and `delete`. These functions are mapped
+to the `HTTP`-Methods `GET`, `POST`, `PUT` and `DELETE`. Most of the functionality
+uses only `GET` and `POST`, so everything is accessible via `wget`.
+
+The API enables you to list available items, buy them and transtact money to your
+accout. It also has a *plugin*-concept. Plugins can be allowed by other user
+
+
+Authentication can be done either per HTTP Basic Auth or for AJAX-Requests per
+cookie. The 
+
 k4evers API 
 
-Authentication
+Plugins
 --------------
  - how does authentication work
  - what is the plugin authentication
  - when does a plugin need an user?
  - how to change user names
 
+
+
 URLs
 ----
 For more information about a specific method you can click on the url/method to get