Yahoo was the most popular online venue visited from U.S. desktop computers in December as modern lives increasingly revolve around using mobile devices to connect with the Internet.
Yahoo was (the most popular online) venue
Yahoo は venue でした
visited (from U.S. desktop computers) (in December)
(increasingly) revolve (around)
using mobile devices
to connect (with the Internet).
注意：to connect は、devicesの形容詞
インターネットに繋ぐ devices は