Contacting Second Level Connections on Linkedin

I’ve found a few Second Level Connections on Linkedin that I’d like to contact. Is there any way to contact them?

Providing More Than What's Requested in a Job Application

I always hear that you want to make yourself stand out, so I’m thinking I should do more than what’s required in a job application. Like if they ask for three references, maybe I should give them five. Or if they want two writing samples, I’ll provide four. What do you think?

Introducing Yourself to a Recruiter

This may seem like a stupid question, but how do I introduce myself to a recruiter who already knows my name?