now finder methods (find_by_name, find_by_css_selector, find_by_tag, find_by_id, find_by_xpath) returns a ElementList object that contains a list of all found elements:
browser.find_by_name('name')
.first - to find first element
browser.find_by_name('name').first
.last - to find last element
browser.find_by_name('name').last
And additionally, using index
browser.find_by_name('name')[1]
An id should be unique in a web page, so find_by_id() method always returns a list with a single element.
browser.find_by_name('name').first