There is no single consolidated source of clerk duties and training - yet. In development is the calling related Church website > Resources > All Resources | Tools for My Calling tab. Hopefully that will consolidate links to the the number of resources for training and task specific articles.
For now a new clerk should look to the primary source of guidance in the
General Handbook. The unit clerk should become intimately familiar with that document. In a way, he will function more effectively if he is the subject matter expert in using and researching the GH.
Once a clerk understands his responsibilities outlined in the GH then he can find task specific articles in the Resources > All Resources | Search feature. Another method to access task help is through the LCR > Help > Help Center articles. The Help Center articles can be found for a specific topic/task by using the Search feature.
Once a clerk is called and permissions have been granted to online resources his My Home page on the Church website will have links in the links bar to calling specific responsibilities.
While not a good source for training articles, the mobile app Member Tools does have a number of tools tiles that allows the clerk to accomplish actions and functions found in Leader and Clerk Resources (LCR). By looking at what is available at those tiles a clerk can research the online Help Center his responsibilities for that function.
One of the purposes of the Church Tech Forum is to discuss clerk duties and responsibilities. When a clerk runs into a situation, task, or problem not addressed in the Help Center articles he can search here for any possible topic thread discussions addressing the issue. He can also start a discussion if nothing is found. He just needs to read and adhere to the
Code of Conduct.