Have you considered browsing the video's section here in the Developer Community for possible related content:
There are also a few blog posts on using Raspberry Pi: https://community.thingworx.com/community/developers/content?filterID=contentstatus%5Bpublished%5D~objecttype~objecttype%5Bblogpost%5D
This specific blog post has several TWX Video Tutorials in one spot:
Hope this helps. If you are looking for more specific guidance, please respond back.