Setup firewall on RB951G-2HnD

Hello,
Just started to use this wonderful router RB951G-2HnD and have a question about firewall.
This guide is for setting up a wall-to-date at the moment? or where there is a better option?

Is this instruction is good and relevant for today? or is there better options?
http://wiki.mikrotik.com/wiki/Basic_universal_firewall_script

If i will use Basic_universal_firewall_script i need also use this one?
http://wiki.mikrotik.com/wiki/Manual:IP/Firewall/Filter

or they replace each other and have to choose just one?

Firewall its realy hard for novice :slight_smile: I will be grateful for the help.