I use Zamzar converter online. There are many other ways but I like this one in particular because it doesn �t require any software download onto the pc, instead it sends the converted files to my email.
step 1 - I choose the url (which I copy from the youtube page of the video I want);
- I delete the http// that shows so it won �t be repeated when I paste the url;
step 2 - I choose the format to convert my video to (I usually choose avi format)
step 3 - write in my email address
step 4 - click to convert
As it converts the file, I can see the progress of the conversion (percentage).
When conversion is completed, I receive an email from zamzar with the link to get my video. I have 24 hours to dowload the video from the minute I receive zamzar �s email.