How to set all user post automatically published after one is approved

Dear Sir,
I am very keen to know that, is there any way of automatically published multi user post after one is approved by admin. Is there any way to email confirmation link of post submission by user himself. If it is then it would be the best. By submitting post he/she should have not to be waited for the admin approval. He or She could have been approved by checking his mail. Please suggest Idea and as i am a newbee i need to know where should i make it my site.