Created two new pages that allow users to add new books and new authors into the database.

elaizabolislis_reading/bookshelf/templates/bookshelf/add-author.html

+{% extends 'base.html' %}
+{% load static %}
+
+{% block title %}Add New Author{% endblock %}
+
+{% block content %}
+<form method="post">
+    {% csrf_token %}
+    {{ form.as_p }}
+    <input type="submit" value="Add Author">
+</form>
+{% endblock %}
\ No newline at end of file

elaizabolislis_reading/bookshelf/templates/bookshelf/add-book.html

+{% extends 'base.html' %}
+{% load static %}
+
+{% block title %}Add New Book{% endblock %}
+
+{% block content %}
+<form method="post">
+    {% csrf_token %}
+    {{ form.as_p }}
+    <input type="submit" value="Add Book">
+</form>
+{% endblock %}
\ No newline at end of file

elaizabolislis_reading/bookshelf/urls.py

 from django.urls import path
 
 from .views import (index, homepage,
-                    BooksListView, BooksDetailView,
-                    AuthorListView, AuthorDetailView
+                    BooksListView, BooksDetailView, BooksCreateView,
+                    AuthorListView, AuthorDetailView, AuthorCreateView
                     )
 
 urlpatterns = [
@@ -10,9 +10,11 @@ urlpatterns = [
     path('home', homepage, name='home'),
     path('books', BooksListView.as_view(), name='books-list'),
     path('books/<int:pk>/details', BooksDetailView.as_view(), name='books-detail'),
+    path('books/add', BooksCreateView.as_view(), name='books-create'),
     path('authors', AuthorListView.as_view(), name='author-list'),
     path('authors/<int:pk>/details',
          AuthorDetailView.as_view(), name='author-detail'),
+    path('authors/add', AuthorCreateView.as_view(), name='author-create'),
 ]
 
 app_name = "bookshelf"

elaizabolislis_reading/bookshelf/views.py

-from django.shortcuts import render
+from django.shortcuts import render, redirect
 from django.http import HttpResponse
 from django.views import View
 from django.views.generic.list import ListView
 from django.views.generic.detail import DetailView
+from django.views.generic.edit import CreateView, UpdateView
 
 from .models import Author, Books
 
@@ -38,3 +39,15 @@ class AuthorDetailView(DetailView):
         context = super().get_context_data(**kwargs)
         context['books'] = Books.objects.all()
         return context
+
+
+class BooksCreateView(CreateView):
+    model = Books
+    fields = '__all__'
+    template_name = 'bookshelf/add-book.html'
+
+
+class AuthorCreateView(CreateView):
+    model = Author
+    fields = '__all__'
+    template_name = 'bookshelf/add-author.html'