To work with Transkribus, it is important to understand how collections and documents are structured. In the image below you can see the logical structure of Transkribus: Your Documents are organized in so called collections. These collections can be understood as a folder containing documents. Collections are typically used on project basis. For instance, all documents belonging to one project are organized in one collection. One collection can have multiple documents. And documents on the other hand consist of one or more document-pages. Every collection as well as every document in Transkribus can be identified with a unique ID.
If you are new to Transkribus you will only have access to one collection i.e. your personal collection with some sample documents in it.