Update readme links, close #668

README.Rmd

@@ -31,8 +31,26 @@ This repository hosts the code underlying Geocomputation with R, a book by [Robi
 
 > Lovelace, Robin, Jakub Nowosad and Jannes Muenchow (2019). Geocomputation with R. The R Series. CRC Press.
 
-This book has been published by [CRC Press](https://www.crcpress.com/9781138304512) in the [R Series](https://www.routledge.com/Chapman--HallCRC-The-R-Series/book-series/CRCTHERSER). 
-The online version of this book is free to read at https://geocompr.robinlovelace.net/.
+The first version of the book has been published by [CRC Press](https://www.crcpress.com/9781138304512) in the [R Series](https://www.routledge.com/Chapman--HallCRC-The-R-Series/book-series/CRCTHERSER) and can be viewed online at [bookdown.org](https://bookdown.org/robinlovelace/geocompr/).
+Read the latest version at [geocompr.robinlovelace.net](https://geocompr.robinlovelace.net/).
+
+
+### Note: we are actively working on the Second Edition 🏗
+
+Since commencing work on the Second Edition in September 2021 much has changed, including:
+
+- Replacement of `raster` with `terra` in Chapters 1 to 7 (see commits related to this update [here](https://github.com/Robinlovelace/geocompr/search?q=terra&type=commits)) 
+- Update of Chapter 7 to include mention alternative ways or reading-in OSM data in [#656](https://github.com/Robinlovelace/geocompr/pull/656)
+- Refactor build settings so the book builds on Docker images in the [geocompr/docker](https://github.com/geocompr/docker) repo
+<!-- Todo: update this bullet point (Rl 2021-11) -->
+<!-- - Next issue  -->
+
+<!-- Todo: add news file? (RL 2021-11) -->
+<!-- See NEWS.md for a summary of the changes. -->
+See https://github.com/Robinlovelace/geocompr/compare/1.9...main#files_bucket for a continuously updated summary of the changes to date.
+At the time of writing (November 2021) there have been around 6k lines added and 6k lines removed, lots of refactoring!
+
+[![](https://user-images.githubusercontent.com/1825120/140612663-e62566a2-62ab-4a22-827a-e86f5ce7bd63.png)](https://github.com/Robinlovelace/geocompr/compare/1.9...main)
 
 ## Contributing