CiviCRM uses the "system workflow templates" "Events - Registration Confirmation and Receipt (off-line)" and Events - Registration Confirmation and Receipt (on-line)" for its automated event emails.
You would need to edit those to include general information you would like to display for each event. This can be a bit tricky as all kind of process logic is crammed in the template but it should be doable. Be aware that you can use api calls to pull certain parameters in order to use within the template.
Additionally, in every event configuration screen (tab online registration) there should be a little text box that allows you to add some event specific text to the email.
If for some reasons that does not work for you, you may want to get in contcact with us as we are currently developing a coherent "event email extension" that allows users to easily set up event mails with certain trigger rules and provide many additional features. We are still looking for funding to complete the extension and it's documentation.