I find that everyone consumes information at different rates, and possibly none of these rates is the same as the rate you are delivering it.
So, you must not only present the info in a concise and interesting way but provide an effective means of allowing everyone to consume at their own pace. These can include:
Offline resources (e.g. handouts or downloadable files)
Online resources (e.g. online presentations, forum or wiki).
The best would be a place (forum or wiki, e.g. Slack channel) where your audience can interact with each other and with you to ask and answer questions, give tips and small demos, feedback, etc.
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.