If you missed the last ACCU conference, you can see some sessions here:

Videos from 2015 ACCU Conference

From the page:

The following videos from the ACCU 2015 Conference are currently available:

• Axel Naumann · Large-Scale Scientific C++ For Casual Coders: Why You (Should) Care
• Pete Goodliffe · Becoming a Better Programmer
• Chris Oldwood · In the Toolbox - Live!
• Hubert Matthews · The Dos and Don'ts of Multithreading