Use 'such as' to list examples relevant to the subject you're discussing. We can save energy in many ways, such as turning off lights when not in use.
Pro Tip 2/3
Non-Exhaustive List
'Such as' implies the list is not comprehensive; there are other examples too. There are many fruits rich in vitamin C, such as oranges and strawberries.
Pro Tip 3/3
Emphasizing Examples
Use 'such as' to emphasize the examples that specifically illustrate your point. Sports requiring teamwork, such as soccer and basketball, improve social skills.