Setting up Ubuntu for gaming with Steam

I'm a linux noob and I've run into a bit of a wall. I was following this forum post to set up gcc/g++ 4.9

https://askubuntu.com/questions/4281...-4-9-on-ubuntu

but when I type the commands in terminal I get this

ubuntuuser@ubuntucomputer:~$ sudo add-apt-repository ppa:ubuntu-toolchain-r/test
[sudo] password for ubuntuuser:
Toolchain test builds; see https://wiki.ubuntu.com/ToolChain

More info: https://launchpad.net/~ubuntu-toolch...ve/ubuntu/test
Press [ENTER] to continue or Ctrl-c to cancel adding it.

E: Malformed entry 61 in list file /etc/apt/sources.list (Component)
E: The list of sources could not be read.
ubuntuuser@ubuntucomputer:~$ sudo apt-get install g++-4.9
E: Malformed entry 61 in list file /etc/apt/sources.list (Component)
E: The list of sources could not be read.
E: Malformed entry 61 in list file /etc/apt/sources.list (Component)
E: The list of sources could not be read.
ubuntuuser@ubuntucomputer:~$

I also have an error message at the top right corner of my screen that I don't understand. I cant post a screenshot but it has this same error message

E:Malformed entry 61 in list file /etc/apt/sources.list (Component), E:The list of sources could not be read.

I'm not sure what I broke. Sorry if this is the wrong section to post this in.