// Define your Goodreads key and secret.
const string apiKey = "<Your API Key>";
const string apiSecret = "<Your API Secret>"; 

// Create an unauthorized Goodreads client.
var client = GoodreadsClient.Create(apiKey, apiSecret);

// Now you are able to call some Goodreads endpoints that don't need the OAuth credentials. For example:
// Get a book by specified id.
var book = await client.Books.GetByBookId(bookId: 15979976); 

// Get a list of groups by search keyword.
var groups = await client.Groups.GetGroups(search: "Arts"); 

// Define your Goodreads key and secret.
const string apiKey = "<Your API Key>";
const string apiSecret = "<Your API Secret>"; 

// Create an unauthorized Goodreads client.
var client = GoodreadsClient.Create(apiKey, apiSecret);

// Ask a Goodreads request token and build an authorization url.
const string callbackUrl = "<callback_url>";
var requestToken = await client.AskCredentials(callbackUrl);

// Then app has to redirect a user to 'requestToken.AuthorizeUrl' and user must grant access to your application.

// Get a user's OAuth access token and secret after they have granted access.
var accessToken = await client.GetAccessToken(requestToken);

// Create an authorized Goodreads client.
var authClient = GoodreadsClient.CreateAuth(apiKey, apiSecret, accessToken.Token, accessToken.Secret);

// Now you are able to call all of the Goodreads endpoints. For example:
// Add a user to friends list
var book = await client.Friends.AddFriend(userId: 1); 

// Add a book to a 'must-read' shelf.
await client.Shelves.AddBookToShelf(shelf: "must-read", bookId: 15979976);