I just came across these resources at Social Venture Partners' website and I found them really very useful, They have designed simple materials through which you can not only take workshops on the below-mentioned topics at your workplaces just by reading them, but also use some of their tools to strengthen your organisational internal processes. They have made it freely available.
Hence sharing in the hope that you may also find them useful.
Also if there are any other sites/ similar resources please do share for the benefit of the whole group. Thank you!
Here's the list-