To abbreviate text that contains capital letters, you can try this array formula based on the TEXTJOIN function, which is new in Excel 2016. You can use this approach to create initials from names, or to create acronyms...

If you need to sum or add the bottom values in a range, you can do so with a formula that uses the SMALL function wrapped inside the SUMPRODUCT function. In the generic form of the formula (above), rng represents a...

To use COUNTIFS with a variable table column, you can use INDEX and MATCH to find and retrieve the column for COUNTIFS. In the example shown, the formula in H5 is:
=COUNTIFS(INDEX(Table1,0,MATCH(G5,Table1[#Headers],0...

To use count a non-contiguous range with criteria, you can use the COUNTIF function together with INDIRECT and SUM. In the example shown, cell I5 contains this formula:
=SUM(COUNTIF(INDIRECT({"B5:B8","...

To allow a dynamic lookup table, you can use the INDIRECT function with named ranges inside of VLOOKUP.
In the example shown the formula in G5 is:
=VLOOKUP(F5,INDIRECT(E5),2,0)
Background
The purpose of this...

To reference a named range on another sheet, you can use the INDIRECT function with the required sheet syntax. In the example shown, the formula in D6 is:
=SUM(INDIRECT("'"&B6&"'!"&C6...

To create a formula with a dynamic sheet name you can use the INDIRECT function.
In the example shown, the formula in C6 is:
=INDIRECT(B6&"!A1")
Note: The point of this approach is it lets you to build...

To create a formula with a "locked" reference – a reference that won't be adjusted during copy or paste, or when rows and columns are changed in a worksheet – you can use the INDIRECT function.
How this formula works...

To test if a worksheet name exists in a workbook, you can use a formula based on the ISREF and INDIRECT functions. In the example shown, the formula in C5 is:
=ISREF(INDIRECT(B5&"!A1"))
How this formula...

To sum the top values in a range, you can use a formula based on the LARGE function, wrapped inside the SUMPRODUCT function. In the generic form of the formula (above), rng represents a range of cells that contain...

To create a lookup with a variable sheet name, you can use the VLOOKUP function together with the INDIRECT function.
In the example shown, the formula in C5 is:
=VLOOKUP($B5,INDIRECT("'"&C$4&...

To use data validation to allow a list of specific characters only, you can use a rather complicated array formula based on the COUNT, MATCH, and LEN functions. In the example shown, data validation is applied with this...

To remove numeric characters from a text string, you can try this experimental formula based on the TEXTJOIN function, new in Excel 2016. In the example shown, the formula in C5 is:
=TEXTJOIN("",TRUE,IF(...

To build a formula with a dynamic reference to an Excel Table name, you can use the INDIRECT function with concatenation as needed. In the example shown, the formula in L5 is:
=SUM(INDIRECT(K5&"[Amount]...

To search multiple worksheets in a workbook for a value and return a count, you can use a formula based on the COUNTIF and INDIRECT functions. With some setup, you use this approach to search an entire workbook for a...