What is the best Free Sound/voice recording App available online?

I have to do a recorded stories so I need an app for my (Lenovo Idea Pad) laptop that will let me edit it. No video its just a voice recording I did on my phone (Samsung s3 mini). I need to cut out bad parts and add additional sounds. I want to put two to four different recording together to make one. I need effects like chimes transition effects maybe giggling and clapping, traffic sounds, nature music, door closing those type of stuff.
As soon as possible.