Ranger as primary, good for farming or PvP?

Hi guys! I just wanted to know if somebody that is a Ranger level 20 and any other secondary skill would be good for (1)farming?

If so, (A)what would be the secondary skill, (B)what would be the main attributes that I'd have to choose and (C)what spells would I have to use?

What if I wanted to be a Ranger focused on PvP? (2)What would be my secondary skill so that I would do a lot of damage and not take a lot of physical damage (because of my Ranger armor)?

Thanks a lot guys, and I would you guys can help me! =D

dual shot/firestorm