ssh free server for ssh tunnel on android

hello everyone,

I want to use ssh tunneling for secure transaction at
internet through my android phone.

I installed "ssh tunnel" on my phone. I don't have any
ssh server at home so now I m unable to configure this.
kindly help me in this regard and provide me few details:

any good and free online ssh server with username and
password
ssh key file

pls help me.
.
thanks in advance