How to use WSSDK to get user properties and update user properties

Anyone could share how to use Web service SDK to get user's properties and update user properties.

let's say I want to be able to get the user's fullname and know if the user's account is enabled or disabled. and I also want to be able to update user's email address field.

I could do the above using .NET SDK but fail to complete the same functions in WSSDK.