Add the files/folders contained in each of the folders cmp, sub and sym to the corresponding folders in your LT Spice installation library folder, which should be located in your user directory at \My Documents\LTspiceXVII\lib.

The EKV MOS model file is called standard.mos. You can either overwrite the existing standard.mos original file (it may be a good idea to make a backup) or add the contents of my standard.mos to the original one.

When adding a new component to a schematic, you can then go into the folder AnalogIC, which contains most of the components that are required for simple analog IC design. The symbols include subcircuits that are described in the library called analog.lib located in the sub folder.

Enjoy!

Christian Enz
18.09.2020