sharepoint online power user playbook is my first book going to launch very soon.
SharePoint 2019 feature id and feature list you can find out using powershell. You will understand basic powershell commands related to Get-SPFeature so as to get sharepoint feature id details and features related ot this sharepoint feature id. Follow step by step procesure to find out how to get sharepoint 2019 features id and features.
How to find Default site templates id sharepoint online using powershell. Follow step by step process to get Default site templates id sharepoint online list usign powershell.
How to resolve access denied content type policy templates error. the solution is applicable for the error Access denied uploading template to content type.
We can get all webs and site templates under site collection by using the a small script. Read full article to know in details.