Getting started with CRM dev using C#

Dear all,

I need to quicly study the way to connect to CRM online and accessing my CRM data and create new one by using c#

I have download the SDk and try to run the basic sample but none of them works and failes during authentication.

The problem with those ready made sample is that it is complicated to follow because you have to idea of clear steps to perform, you have sample already build.

In order to learn easily, is there a place where I could get a real stepe by step guide on how to build a small app which connect to CRM 365 online ?

That would help a lot

thanks

Serge