RE: Excel
Hi Louise
Thank you for your question. Excel can be used to create data sources for mailmerge. Create a column for each field that will be used in the merge document. Keep the titles of the columns simple, preferably with no spaces. Save the file and when you get to step three in the Word mailmerge process choose "Existing list" and browse for your Excel workbook.
I hope this helps - do let us know if you have any further questions.
Kind regards,
Andrew