I have a couple of posts that I am working on at the moment, but in the meantime here are few gems that you should find useful
Developing Project Server apps walkthrough
Following on from my series covering the building the Publish All Enterprise Project app, Microsoft have released an official walk through to build a Project Server app over at http://msdn.microsoft.com/en-us/library/office/jj873844.aspx. This excellent walk through takes you through all that is needed to build a SharePoint hosted Quick Statusing app.
Debugging against Project Online
If you building a Project Server app, you are going to need a development environment. Whilst you can spin up your own dedicated on premise development environment, a far easier option is to use a Project Online tenant. Unfortunately, Office 365 doesn’t have the concept of a Project Online developer site out of the box. This excellent post by Alexander Vanwynsberghe, outlines how to use the SharePoint Online Management Shell to activate a special Developer site collection feature to a non development site collection (or in our case a Project Online site collection).
Default permissions for the new SharePoint based security groups
I have been spending a bit of time with the new SharePoint permission mode of Project Server that leverages SharePoint based groups for users instead of the traditional Project Server based groups. SharePoint groups make it much simpler to manage permissions within a Project Server instance, but it’s important to know what the underlying permissions are assigned (e.g. can a member of the Administrator group change a workflow, can a member of the Project Manager group manage rules?). Luckily there is a must read article over at http://technet.microsoft.com/en-us/library/jj219510.aspx that outlines what the default permissions are for SharePoint security groups.
Make sure you check out the365project.net, we have had some fantastic tips and tricks covering Project, Project Server and SharePoint posted over the holiday period, with plenty more queued up to come.