Skills Network Labs provides you with dedicated storage to hold your files. You get your own storage with your data organized in folders (subdirectories) that is only accessible by you.
If you are a JupyterLab user you can manage your files using excellent JupyterLab built-in File Browser. You can browse your folders and use the context menu (tight mouse click) you perform a variety of operations such as copy, rename, delete, download it to your computer etc. You can use the icons on the top of the File Browser window to create new folders, upload files from your computer and even clone GitHub repositories.
Alternatively, you can use Skills Network My Data app to manage your files. You will find My Data on the left navigation menu which you can open by clicking on the "hamburger menu" (3 bars) in the top left corner.