diff -r a372c494d541 -r 3170a7cd7858 README
--- a/README	Fri Sep 20 23:41:09 2013 +0100
+++ b/README	Sat Sep 21 18:37:24 2013 +0100
@@ -55,18 +55,31 @@
 Mac
 ---
 
+You will need the command line tools for any of the procedures described
+below. If you don't already have them, install Xcode (it's a free download).
+
 The least intrusive means to build on a Mac is to use Homebrew. However,
-Homebrew is not compatible with fink so if you have previously used fink
+Homebrew is not compatible with Fink so if you have previously used Fink
 then you need an alternative solution, such as MacPorts (see below).
 
-It may also be possible to use fink itself.
+It may also be possible to use Fink itself.
 
 Mac using Homebrew
 ------------------
 
 http://mxcl.github.com/homebrew/
 
-Install Homebrew according to its instructions.
+Install Homebrew according to its instructions. If you already had Homebrew
+before, make sure it's all up to date and “raring to brew.” For that, you
+want to run:
+
+$ brew update
+
+and
+
+$ brew doctor
+
+from your terminal.
 
 If you are building bookloupe for your own use, you can use dynamic linking
 like this: