diff --git a/backend/.gitignore b/backend/.gitignore
index 5b635eef..25343357 100644
--- a/backend/.gitignore
+++ b/backend/.gitignore
@@ -8,4 +8,4 @@ htmlcov/
 docs/_build/
 dist/
 venv/
-*.env
+.env
diff --git a/backend/environment.env b/backend/environment.env
deleted file mode 100644
index 4d652d51..00000000
--- a/backend/environment.env
+++ /dev/null
@@ -1,2 +0,0 @@
-DB_HOST=postgresql://postgres:postgres@localhost:5432/sel3_db
-
diff --git a/backend/project/__init__.py b/backend/project/__init__.py
index e38de8a9..66435003 100644
--- a/backend/project/__init__.py
+++ b/backend/project/__init__.py
@@ -20,8 +20,15 @@ def create_app():
 
     return app
 
-def init_db(db_uri):
-    """Initialize the database with the given uri"""
+def create_app_with_db(db_uri:str):
+    """
+    Initialize the database with the given uri 
+    and connect it to the app made with create_app.
+    Parameters:
+    db_uri (str): The URI of the database to initialize.
+    Returns:
+        Flask -- A Flask application instance
+    """
     app = create_app()
     app.config["SQLALCHEMY_DATABASE_URI"] = db_uri
     db.init_app(app)
diff --git a/backend/project/__main__.py b/backend/project/__main__.py
index c90b8d38..9448b0eb 100644
--- a/backend/project/__main__.py
+++ b/backend/project/__main__.py
@@ -2,11 +2,11 @@
 from sys import path
 from os import getenv
 from dotenv import load_dotenv
-from project import init_db
+from project import create_app_with_db
 
 path.append(".")
 
 if __name__ == "__main__":
-    load_dotenv(dotenv_path='environment.env')
-    app = init_db(getenv("DB_HOST"))
+    load_dotenv()
+    app = create_app_with_db(getenv("DB_HOST"))
     app.run(debug=True)
diff --git a/backend/project/endpoints/index.py b/backend/project/endpoints/index.py
index 94096189..e5b68473 100644
--- a/backend/project/endpoints/index.py
+++ b/backend/project/endpoints/index.py
@@ -6,10 +6,11 @@
 
 
 class Index(Resource):
-    """Temporary"""
+    """Api endpoint for the / route"""
 
     def get(self):
-        """Hello world"""
+        """Example of an api endpoint function that will respond to get requests made to /
+        return a json data structure with key Message and value Hello World!"""
         return {"Message": "Hello World!"}
 
 
diff --git a/backend/project/models/course_relations.py b/backend/project/models/course_relations.py
index 277c61f6..7b30ad48 100644
--- a/backend/project/models/course_relations.py
+++ b/backend/project/models/course_relations.py
@@ -5,7 +5,10 @@
 from project import db
 
 class BaseCourseRelation(db.Model):
-    """Base class for course relation models"""
+    """Base class for course relation models,
+    both course relation tables have a 
+    course_id of the course to wich someone is related and
+    an uid of the related person"""
 
     __abstract__ = True
 
diff --git a/backend/project/models/courses.py b/backend/project/models/courses.py
index b1f73a39..7a105881 100644
--- a/backend/project/models/courses.py
+++ b/backend/project/models/courses.py
@@ -5,7 +5,8 @@
 
 
 class Courses(db.Model):
-    """Course model"""
+    """This class described the courses table, 
+    a course has an id, name, optional ufora id and the teacher that created it"""
 
     __tablename__ = "courses"
     course_id = Column(Integer, primary_key=True)
diff --git a/backend/project/models/projects.py b/backend/project/models/projects.py
index 19ade7a2..68f68ae9 100644
--- a/backend/project/models/projects.py
+++ b/backend/project/models/projects.py
@@ -4,7 +4,14 @@
 from project import db
 
 class Projects(db.Model):
-    """Project model"""
+    """This class describes the projects table,
+    a projects has an id, a title, a description, 
+    an optional assignment file that can contain more explanation of the projects,
+    an optional deadline,
+    the course id of the course to which the project belongs,
+    visible for students variable so a teacher can decide if the students can see it yet,
+    archieved var so we can implement the archiving functionality,
+    a test path,script name and regex experssions for automated testing"""
 
     __tablename__ = "projects"
     project_id = Column(Integer, primary_key=True)
diff --git a/backend/project/models/submissions.py b/backend/project/models/submissions.py
index 78889337..5b20cee4 100644
--- a/backend/project/models/submissions.py
+++ b/backend/project/models/submissions.py
@@ -4,7 +4,15 @@
 from project import db
 
 class Submissions(db.Model):
-    """Submission model"""
+    """This class describes the submissions table,
+    submissions can be made to a project, a submission has
+    and id, a uid from the user that uploaded it, 
+    the project id of the related project,
+    an optional grading,
+    the submission time,
+    submission path,
+    and finally the submission status
+    so we can easily present in a list which submission succeeded the automated checks"""
 
     __tablename__ = "submissions"
     submission_id = Column(Integer, nullable=False, primary_key=True)
diff --git a/backend/project/models/users.py b/backend/project/models/users.py
index 15e965b1..c5af5287 100644
--- a/backend/project/models/users.py
+++ b/backend/project/models/users.py
@@ -5,7 +5,10 @@
 
 
 class Users(db.Model):
-    """User model"""
+    """This class defines the users table,
+    a user has an uid,
+    is_teacher and is_admin booleans because a user 
+    can be either a student,admin or teacher"""
 
     __tablename__ = "users"
     uid = Column(String(255), primary_key=True)