The main source to install the last version of Ymple is Github.
You can clone the project at: https://github.com/Ymple/ymple-ecommerce
Then you need a mongodb database up and nothing more
This is what a topic and post looks like. As an administrator, you can edit the post's title and content.
To customise your forum, go to the Administrator Control Panel. You can modify all aspects of your forum there, including installation of third-party plugins.