How to consume a Dynamics AX webservice in an external application

I have got a Dynamics AX web-service from my client which looks like this.

I don’t Know any thing about the data that this service is going to give me. I just had this service. Can any one tell me what is the approach I need to take with this service. Basically I want to consume this service inside an external web application. I can’t find any tutorial on this case. Can any one point out some tutorials on this issue ?

As I already answered on another forum:

Look at How to: Call an AIF Web Service from C#. Skip Prepare the AIF Environment because it’s not your concern.