Microsoft provide a range of training materials for the Lync web app program which can be found via the links below. You will notice that all the materials are branded “Skype for Business”. This is Microsoft’s new name for Lync and the functionality is the same.
To read the Microsoft Quick Start Guide click here.
To read the Microsoft General Help information click here.
If you are having issues installing the web app there are some resources provided by Microsoft. To access these resources click here.