Reducing wordy phrases:
People who have experience as runners should join the first running group, while people who have less experience should join the second group.
Getting rid of "There is" and "There are":
There are a variety of ways to successfully start a career as a writer.
There is a beautiful painting of lilies hanging in the hallway.
Avoiding passive sentences:
The young girl was bullied mercilessly online by classmates.
The field of photography was changed forever by the advent of the internet.
(In other news, here's more about linking, particularly in relation to journalism, in case anyone is interested!)