First things first. Download the interpreter source code from here.
To compile the interpreter you need GHC and the Haskell Platform. Then just type "ghc --make main.hs -o burlesque -O3 -fforce-recomp && chmod +x ./burlesque". You might not have all required modules. 'cabal install split web-encodings haskeline mtl regex-compat parsec digits statistics' should fix that.
Start the interpreter with "./burlesque --shell" and you're ready!
blsq ) 5 5 .+ 10 blsq )
You can use "./burlesque --file path" to execute a file including reading from stdin. (Use --file--no-stdin if you don't want that.) You can also just pass a program to it './burlesque --no-stdin "5 3 .-"'.
Now you're ready to read the tutorial.