Who wouldn't like to make some cash while they surf?  And which program would be the best for you?  This is an individual choice.  Many people begin with free malls or shops, one of which I've inset below.
This is my newest shop, which is located on a "mall community" site called SpreadShirt.

If producing goods for sale isn't your 'bent', so to speak, this isn't
the only path to profitable Web-citizenry. YouTube now has a Partner Program, open to all creators of acceptable content.