diff --git a/README.markdown b/README.markdown
index e527ef5..0430938 100644
--- a/README.markdown
+++ b/README.markdown
@@ -954,6 +954,7 @@ Links to resources I have found useful or think might be helpful to future me or
 * [Grand Unification Theory: Writing and Running Code, by Brian Ford (Barcelona RuCo 2012)](http://www.youtube.com/watch?v=iub8zWID4yk)
 * [Programming and minimalism: lessons from Orwell and the Clash - Jonathan Dahl (RubyConf 2010)](http://www.confreaks.tv/videos/460-rubyconf2010-programming-and-minimalism-lessons-from-orwell-and-the-clash)
 * [States and Nomads: Handling Software Complexity - Zach Tellman](http://forwardjs.com/university/states-and-nomads)
+* [Good Code, Bad Code](https://www.manning.com/books/good-code-bad-code)
 
 ### CLEAN CODE - AGILE
 
@@ -964,6 +965,7 @@ Links to resources I have found useful or think might be helpful to future me or
 * [The Business Decision Maturity Model](http://www.kpiusa.com/index.php/The-Decision-Model/business-decision-maturity-model-bdmm.html)
 * [Black Swan Farming](http://blackswanfarming.com/cost-of-delay/)
 * [Management & Measurement & Business Value – “Oh My”: Creating Solutions with Measurement in Changing Times - Dan Galorath](http://www.ifpug.org/ISMA6/Galorath-Keynote%20Measurement%20Management%20Business%20Value-Sept%2014.pdf)
+* [The Agile Idea](https://www.manning.com/books/the-agile-idea)
 
 #### CLEAN CODE - AGILE - KANBAN
 
@@ -980,6 +982,7 @@ Links to resources I have found useful or think might be helpful to future me or
 * [API Blueprint](https://apiblueprint.org/) & [Github](https://github.com/apiaryio/api-blueprint)
 * [Dredd — HTTP API Validation Tool](https://github.com/apiaryio/dredd)
 * [Pliny - Write excellent APIs in Ruby](https://github.com/interagent/pliny) & [Better APIs with Pliny - Will Leinweber (RubyOnAles 2015)](https://www.youtube.com/watch?v=lA8KhC9fFYY)
+* [API Design Patterns](https://www.manning.com/books/api-design-patterns)
 
 #### CLEAN CODE - APIS - DOCUMENTING
 
@@ -1722,6 +1725,7 @@ CSSConf: [Budapest 2019](https://www.youtube.com/playlist?list=PL37ZVnwpeshFWIBz
 * [Intro to GraphQL - Lee Byron (0REDEV 2015)](https://www.youtube.com/watch?v=Wq02BNrN1dU)
 * [Exploring GraphQL - Nick Schrock (Dev Tools @ Scale)](https://www.youtube.com/watch?v=_9RgHXqH8J0)
 * [GraphQL: Designing a Data Language - Lee Byron (StrangeLoop 2016)](https://www.youtube.com/watch?v=Oh5oC98ztvI)
+* [Full Stack GraphQL Applications (Manning 2021)](https://www.manning.com/books/fullstack-graphql-applications)
 
 #### DATABASES - GRAPHQL - IMPLEMENTATIONS
 
@@ -5869,6 +5873,7 @@ Peter R. Egli:
 * [An Introduction to Statistical Learning With Applications in R - Gareth James, Daniela Witten, Trevor Hastie and Robert Tibshirani](http://www-bcf.usc.edu/~gareth/ISL/) & [PDF](http://www-bcf.usc.edu/~gareth/ISL/ISLR%20Seventh%20Printing.pdf) & [Videos](https://www.alsharif.info/iom530)
 * [Elements of Statistical Learning, 2nd ed](https://web.stanford.edu/~hastie/Papers/ESLII.pdf)
 * [Learning Statistics will Save Your Life - John Paul Ashenfelter (MountainWest RubyConf 2015)](http://confreaks.tv/videos/mwrc2015-learning-statistics-will-save-your-life)
+* [Statistics Playbook - Gary Sutton (Early Access 2022)](https://www.manning.com/books/statistics-playbook)
 
 ### STATISTICAL ANALYSIS - PRINCIPAL COMPONENT ANALYSIS
 
@@ -5910,6 +5915,7 @@ Peter R. Egli:
 * [Test Your Legacy Rails Code - Noel Rappin (Ruby Midwest 2011)](http://confreaks.tv/videos/755-rubymidwest2011-test-your-legacy-rails-code)
 * [Jenkins User Conference San Francisco 2012 videos](http://confreaks.tv/events/jucsf2012)
 * [Breaking Up With Your Test Suite - Justin Searls (AncientCity Ruby 2014)](http://blog.testdouble.com/posts/2014-05-25-breaking-up-with-your-test-suite.html)
+* [Testing Web APIs (Manning Publications 2021)](https://www.manning.com/books/testing-web-apis)
 
 ### TESTING - CONTINUOUS INTEGRATION