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You have several libraries at your disposal, everything depends on the complexity you want, if only it is to show title description or to make a use tutorial and detect if the user presses or enters the content for the next point etc ...
FancyShowCaseView Library
Download: link
Tap Library Target Prompt
Download: link Another similar to the last: link
HintCase Library
For something more personalized download: link
You can create an XML file in which you save if the user has already entered the application and if not, show the help menu and save a value in the XML so that it does not appear again.