diff --git a/README.md b/README.md
index 0b6c937..4934ae0 100644
--- a/README.md
+++ b/README.md
@@ -2,3 +2,8 @@ _FigTree_
 
 FigTree is designed as a graphical viewer of phylogenetic trees and as a program for producing publication-ready figures. As with most of my programs, it was written for my own needs so may not be as polished and feature-complete as a commercial program. In particular it is designed to display summarized and annotated trees produced by BEAST.
 
+## Instructions
+
+1. Install [Apache Ant](https://ant.apache.org/) (can be installed with Homebrew).
+2. Run `ant`.
+3. Start FigTree by running `java -Xmx10G -jar dist/figtree.jar`.