You can open any project that you have synched with your AutoCAD account, and perform basic edits with drawing tools, moving objects, resizing, etc. You don't even need an Internet connection to work - do what you need to do and it will synch again when you do have online access.
Another interesting feature included in the free version of AutoCAD 360 allows you to share your work. It's easy to do from the program's interface, where you can also add notes and images to complement the project. You can even print your documents from the program thanks to the ePrint and Share service.
AutoCAD 360 is a very useful tool for frequent AutoCAD users, who now have the ability to take their work with them everywhere, whether or not there's Internet access. There is also a paid PRO version that you can buy to gain access to many more features.