How to make your own ringtones on Crostel. com? Moreover, it is 100% free?

never even heard of that site before.
I have been using this FREE site here for years

http://www.ventones.com

its the best. Me and my friends at school all use it and its awesome.
You can make your own ringtones from 2 different sources

1) an mp3 file

or

2) find any video on youtube, copy and past the web address on Ventones
and you can convert it into a ringtone

Their service is 100% free.
I have been a registered member for over 4 years now,

Its very safe, legit and they won’t send you any spam emails or text messages (this part is important) because most free sites
will spam you like crazy after you register.

Never had any problems with ventones.

Like i said, you can make the ringtones
and if you like after you make it,
just download it to your computer
and then use a cable or memory card reader to transfer it.