Features have already been written to start you on your way to building an app that looks like this: http://wiki.devchix.com/images/4/4c/Ui.jpg
The idea is that it is an app where people can make suggestions of topics they want to learn and then people can vote on them
rails suggestorama
cd suggestorama
ruby script/generate cucumber
rm -rf features
git clone http://github.com/ultrasaurus/workshop-features.git features
rm -rf features/.git
cd config
echo "default: --format pretty" > cucumber.yml
cd ..
rake db:migrate
Full step by step instructions are here: http://wiki.devchix.com/index.php?title=Rails_Curriculum