Importing data from data.world into Excel
If you're working in Excel and you want to import a file from data.world into your current workbook, select Import data from the Excel menu bar and choose either a new dataset or one you have previously worked with in Excel:

If you choose to import a new item you'll be prompted to choose the source dataset or project from all of the datasets and projects you explicitly have permissions to (you do not get a list of all the datasets and projects on data.world--just the ones you own, that are owned by an organization you are in, or which have been shared with you). Next you choose whether to import a query or a table (a table is any tabular file in the dataset or project you chose), and if you want to import it to a new tab in your workbook or to the current sheet:

Note: if you import into the current sheet, all the data in the sheet will be overwritten.
After working with the data in Excel you can sync it back up to data.world.