Here is a tip that reduces your Power Query steps with 1 step less.
When I build date tables I typically use the function List.Dates to create a list of dates.
As I want it as a table I use the Ribbon interface to convert the list of dates into a table
Which then gives med a table with on column called Column1
Instead of renaming the column using the interface like this
And thereby getting an extra step “Renamed Columns”
You should modify the third argument in the Table.FromList and specify the name of the column in a list
= Table.FromList(Source, Splitter.SplitByNothing(), {“Date”}, null, ExtraValues.Error)
Which will reduce the number of steps with 1.
Erik Svensen - Blog about Power BI, Power Apps, Power Query 
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Hi Erik,
Great post, thanks for sharing. With my research I stumbled upon your article.
If you like you can even include the data type in the Table.FromList function. I’m currently writing an article on this. For example, the following codes returns the data type too:
= Table.FromList(
{“Apple”, “Prume” },
null,
type table[Product=Text.Type] // specifies column type and name
)
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