Video editor suggestion I'm new here.
I'm looking for a easy-to-use video editor, like windows movie maker but with a couple of more tools like: adding videos over a video and adding two or more lines of text simultaneously appearing with different effects. I'm using Windows 7 and the software must be free. Thanks for your suggestions!
Start here: 10 free video editors mirror.

Keep in mind that free video editors are very simple and do not have many effects. 
I recommend you to buy inexpensive video editing software, like Sony Movie Studio or Cyberlink PowerDirector. Take a look at this list of consumer video editors mirror.