For those who like to attend conventions, but don't have an infinite budget, there are sometimes (as thankfully there is with oSC15) videos.
The staff of the Southern California Linux Exposition (SCaLE) has a YouTube channel < https://www.youtube.com/channel/UCN2nbMPLJWv3Y__4JuF_hMQ > to which they are now actively posting presentations made at SCaLE14x. You can binge on copies of the 11 hour live feeds from individual rooms or find individual presentations broken out. Of course, the quality of the presentation depends upon the originator, but I intend to look for information I was not able to receive live. It was a great conference and I expect to find much more good information in the videos.