<p>Can anyone point me to a good introduction to coding against the paypal API?</p>

[{'answer_id': 53077, 'author': 'Espo', 'author_id': 2257, 'author_profile': 'https://Stackoverflow.com/users/2257', 'pm_score': 2, 'selected': False, 'text': '<p>I would suggest you start by downloading the SDK:</p>\n\n<p><a href="https://www.paypal.com/IntegrationCenter/ic_sdk-resource.html" rel="nofollow noreferrer">https://www.paypal.com/IntegrationCenter/ic_sdk-resource.html</a></p>\n\n<p>The SDK includes the following:</p>\n\n<ul>\n<li>Client libraries that call PayPal APIs</li>\n<li>API documentation for SDK components</li>\n<li>Sample code for Website Payments Pro and various administrative APIs</li>\n<li>Testing console that can verify connectivity to PayPal and submit API calls</li>\n</ul>\n\n<p>You may also want to take a look at <a href="http://paypal.encoresystems.net/" rel="nofollow noreferrer">Encore Systems .NET* Class Library for PayPal SOAP API</a></p>\n'}, {'answer_id': 53183, 'author': 'seanb', 'author_id': 3354, 'author_profile': 'https://Stackoverflow.com/users/3354', 'pm_score': 4, 'selected': True, 'text': '<p>Found this article by Rick Strahl recently <a href="http://www.west-wind.com/presentations/PayPalIntegration/PayPalIntegration.asp" rel="noreferrer">http://www.west-wind.com/presentations/PayPalIntegration/PayPalIntegration.asp</a>.  </p>\n\n<p>Have not implemeted anything from it yet, Rick has quite a few articles around the web on ecommerce in aspnet, and he seems to show up everytime I\'m searching for it.</p>\n'}, {'answer_id': 53430, 'author': 'xanadont', 'author_id': 1886, 'author_profile': 'https://Stackoverflow.com/users/1886', 'pm_score': 0, 'selected': False, 'text': '<p>I don\'t know what your needs are, but you might want to consider <a href="http://code.google.com/apis/checkout/samples/Google_Checkout_Sample_Code_NET.html" rel="nofollow noreferrer">Google Checkout</a>.  <a href="http://www.joeaudette.com/paypal-sandbox-doesnt-work.aspx" rel="nofollow noreferrer">Joe Audette</a> was having considerable difficulty integrating PayPal.</p>\n\n<p>I\'ve <a href="http://www.obtusesoft.com" rel="nofollow noreferrer">used</a> Google Checkout and have had great success.  Note that you can go much, MUCH deeper with Google Checkout than the sample linked above.</p>\n\n<hr>\n\n<p>EDIT: I didn\'t see Joe\'s updates.  Look like he did eventually get it working.</p>\n'}]
['https://Stackoverflow.com/questions/53070', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/2701/']