I found a great Knowledge20 session from Peter Bell… That one that got me technically excited… It’s about a yet undocumented GlideRecord successor: GlideQuery! ?
If you don’t want to view the 20 minute video, there is an excellent blog article alternative from Jace Benson, shorter to read.
Jace’s Article: Glide Freaking Query Wow
Knowledge20 Video: GlideQuery: A modern upgrade to GlideRecord