Our blog contains the activity stream of Orchard Dojo: general news, new resources or tutorials are announced here.
A nice checklist about what not to forget when creating a content part at Orchard Hungary.
A very useful video by Bertrand Le Roy. Migrating an SQL CE database, the simple-to-use self-contained database format used by Orchard, to a standard SQL Server database is a necessary step when your site grows. SQL CE is great for development and for small sites, but the full SQL Server DBs are much better performing.
These videos are not new but are definitely not outdated but still valuable resources: Brent Arias created a 4-part series about the most important concepts of Orchard, covering parts of the dashboard that a user will use most.