DoubelJ

With this plugin you can add a Training and associated Courses to your WordPress site. 
With a widget you can get a sorted list by date of the Training.
In newer versions there is an agenda with the training and an opportunity to add subscription forms at the training and an e-learning module.

JaJaDi Training

With this plugin you can add training and courses to your WordPress site.

mareksotak

Inline manual is an online documentation tool, making it easy for everyone to create, update and re-use documentation for your WordPress end-users. Teach them how to use the website you have just created through in-app walkthroughs, tooltips and topic launchers.
http://inlinemanual.com

Inline Manual

Connect Inline Manual with your Wordpress.

JaJaDi Training vs Inline Manual