Some Questions About LinkedIn?

I have just signed up to LinkedIn and I have a few questions about it that im hoping someone will be able to answer here on DP. If you can give me some info / answers on any of all of the below questions, please reply.. Thanks!

How do I get my posts and updates to show on my profile?
How do I add my websites to my LinkedIn profile?
How do people follow me? Im meaning where do people actually do it from my profile page?

See original post by Sean101