I presented at the SharePointFest Chicago in October 2013. During my presentations, I mentioned that I would upload my PowerPoint presentations.
Session 1: Search Customizations
This session covered customizations for search in SharePoint 2013.
1. Display Templates
2. Server side search web parts.
3. Boosting and segmentation
Here is the link : http://www.slideshare.net/perficientinc/search-customizations
Session 2: Public Websites in SharePoint 2013
In this session I spoke about all the considerations and options one has while creating a public web site in SharePoint 2013. I covered some of the quirks of SharePoint 2013 and workarounds.
Here is the link to the PowerPoint presentation : http://www.slideshare.net/perficientinc/creating-public-facing-websites-with-sharepoint-2013