Is there an easy way to create bins for a number of different dimensions at one time? I have 60 items and I want to create bins for each one.

If you want to create separate Bin on all those different dimensions then you will have to create those separately. but while creating the bin, if you want to combine all those dimensions then you can Press control and select all and then create the bin on all those dimensions.

how to use salesforce calculation in tableau

To use the sales force calculation in the tableau you need to use the syntax which is a little different from what we have in tableau. For example, if you want to swap the start date and end date you can use the code like below-

IIF([Is Closed],

DateDiff('day', [CreatedDate (Opportunity)], [Close Date]),

DateDiff('day', [CreatedDate (Opportunity)], TODAY()))