Have a listen to the video and then download the infographic. Where to speak who are you talking too? Remember, your audience can be in different places depending on who they are, what they do and most importantly, what problem they have. Think more widely when working out where they are.
List of CRM (Customer Relationship Management) sites. I use ZOHO and find it really useful. You can build a simple database on a spreadsheet if you want. Speaker opportunities database Useful CRM’s Speaker opportunities database