When you first sign-in to Cubbit DS3 you are asked to create a new project, the project is what holds information about the available storage (users with a Cubbit Cell and/or Cubbit Cloud migrating to Cubbit DS3 will have a single project summing up the space of all their Cubbit Cells).
Once the project is created you then need to create a bucket that will host your files and folders, a bucket needs to have a unique name within the entire Cubbit DS3 system.
You can create several buckets but, in the case of personal use, you only need to create one without having to worry about advanced settings.
After the bucket is created you can open it to start uploading your files and folders either by clicking the Upload object button or by using the drag and drop feature. In Cubbit DS3 both files and folders will be referred to as objects.
For a quick start guide to using the Web Console, please refer to our official documentation.