Copy the zip file to your hard drive and uncompress it.

Usage

To use QuantLibXL:

Start Excel
Load the addin. Two XLLs are provided, one 32-bit and one 64-bit, please open the one that is appropriate for your version of Excel:
```
xll\QuantLibXL-vc142-mt-s-1_22_0.xll
xll\QuantLibXL-vc142-x64-mt-s-1_22_0.xll
```

Load some example workbooks. The best ones to start with are:

StandaloneExamples\Analytics\YieldCurveBootstrapping.xls
StandaloneExamples\Analytics\InterestRateDerivatives.xls

Hit Ctrl-Alt-F9 to force a full recalculation
Please see also the other example workbooks in the StandaloneExamples directory.
The help file is in the Docs directory.
For further help, please use the mailing list: https://lists.sourceforge.net/lists/listinfo/quantlib-users