Google Sheets is an online spreadsheet app that lets you create and format spreadsheets and work with other people.
https://support.google.com/a/users/answer/9310369?hl=en&sjid=13636165974349336395-EU&visit_id=638669371447998501-277610885&ref_topic=9296423&rd=1
https://support.google.com/a/users/answer/10665104?hl=en&ref_topic=9296423&sjid=13636165974349336395-EU
https://support.google.com/a/users/answer/13309904?hl=en&ref_topic=9296423&sjid=13636165974349336395-EU
https://support.google.com/a/users/answer/9331278?sjid=13636165974349336395-EU
https://support.google.com/a/users/answer/9331167?sjid=13636165974349336395-EU
https://support.google.com/a/users/answer/9331279?sjid=13636165974349336395-EU
https://support.google.com/a/users/answer/9330962?sjid=13636165974349336395-EU
https://support.google.com/a/users/answer/9331168?sjid=13636165974349336395-EU
https://support.google.com/a/users/answer/9331169?sjid=13636165974349336395-EU
https://support.google.com/a/users/answer/9330963?sjid=13636165974349336395-EU
https://support.google.com/a/users/answer/9331170?sjid=13636165974349336395-EU
https://support.google.com/a/users/answer/9300022?sjid=13636165974349336395-EU