ServiceM8 Development in C# (Contact Details and job sync, UUID's, OAuth 2.0)

I just wanna ask some things:

1)How to sync the data of Contact Details to Jobs. I have tried them under the same UUID's but the Job is getting the Company Name(Client) only so basically my Job Record has name in Company column only, there is no Contact First and Contact Last which is the Company Contact.

2)If I will be getting each UUID's so they can sync to each modules how can I retrieve or get it? (Using the ServiceM8's UUID Automatic Generation)

3)And can I have a sample of OAuth 2.0 of ServiceM8 in C#. I accomplished on writing a POST using HTTPClient. Am I in the right track?

Thanks! Kudos to all the guys here.