link spreadsheet https://docs.google.com/spreadsheets/d/1c4HvHF39ZFW-pKorzfkFaG0LWxO6lgtKrh6bsN_YbOs/edit?gid=759919986#gid=759919986 (Excel Basic Formula)
https://docs.google.com/spreadsheets/d/1j_qiL5YLXKRQYYgnddhoD5IoMQr8IGD1/edit?gid=317080439#gid=317080439 (Exploring the Home Tab)
https://docs.google.com/spreadsheets/d/133H40FK-5uOCHjtkhMrfcwC1jQBesMlXAGNMcA_H4OQ/edit?gid=0#gid=0 (Ms. Excel Features)