Buying furniture online could be risky as well as very beneficial. It all depends upon where you buy it from and how do you select your furniture.
Pros
You don't have to go to different stores.
You can purchase it from anywhere.
You can also get it delivered anywhere.
There are lot of options online.
You can compare prices and check through different providers.
Cons
You should have knowledge about furniture.
You may get cheated if you don't buy from a good company.
According to my experience you might go for shopping furniture online.