tutorial
US /tuːˈtɔːr.i.əl/
UK /tuːˈtɔːr.i.əl/

1.
a period of instruction given by a university or college tutor to an individual or to a very small group
:
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I have a math tutorial every Tuesday morning.
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The professor offers extra tutorials for students who need help.
2.
a practical guide, especially one for a computer program or other device
:
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I watched a video tutorial on how to use the new software.
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The website provides a step-by-step tutorial for beginners.