New users/Inactive member are somewhat limited for safety reasons. As you participate here, you'll gain the trust of the community, become a full PHCitizen, and those limitations will automatically be removed.
Established members are members that have a few extra features because they contributed something useful to this site. It's actually not hard to become an established member, but it does require some minimal effort.
User has posted at least 30 post
User has been registered for at least 30 days
Maintain 5 post every 30 days period to keep your account on Established Group.