need spreadsheet work, pivot table and graphs

i need to dress up my spreadsheet... ill need a pivot table built and some graphs that tie to the pivot table. i already have some of the sheet built... im using Google Drive... so you can log on there and make the changes. specifically i have a list of events with date/instructor/length/etc. i need the pivot table (or other solution) to group events by month and get totals, then the charts will be built tied to those totals.