diff --git a/pages/LotsOfLinks.md b/pages/LotsOfLinks.md
index bdeabc2..86bccf1 100644
--- a/pages/LotsOfLinks.md
+++ b/pages/LotsOfLinks.md
@@ -161,6 +161,7 @@ Cmd-Ctrl-Shift-4, then space (cursor turns from cross hairs to a camera), click
 
 [Linux dhcpd Options](https://linux.die.net/man/5/dhcp-options)<br>
 [git move subdirectory of a repo](https://stackoverflow.com/questions/359424/detach-move-subdirectory-into-separate-git-repository/17864475#17864475)<br>
+[Pro Git, the book](https://git-scm.com/book/en/v2)<br>
 
 ## FreeBSD