1) I start up my phone at the digi place coz scared the phone got problem so during the initial setup I skip most of the stuff (Including the google account and facebook acccount part)

I read the manual at some page it says if I skip that then some feature will be disabled ? =.= Is it true ? Can I still do it now or I have to do a factory reset =/

Let me quote the message from the manual page 75:

If you skipped signing in to a Google Account when you first set up your phone, you may encounter problems when using some Google apps. If these problems persist, you may need to factory reset your phone and enter your Google Account details when you set up the phone again. To factory reset your phone, see “Restarting or factory resetting your phone” in the Update and reset chapter.