Cheat sheet for advanced Excel formulas
Concatenate strings this way:
=A1&” more text”
By default, references in Excel are relative. For an absolute reference, prefix the column and row with "$"
=$A$2
=Sheet1!A1
Count cells that match criteria:
=COUNTIF(A2:A, ">1")
Sum cell values if they match criteria:
=SUMIF(A2:A, ">1", B2:B)