Can i get some help with my r/n?

Ok ive decided to make a ranger that primarily will just shoot and kill stuff. I also want a beast (he will be my partner )

Now im new to the game so can somone help me with these questions.

1.What skill should I have on my bar for the build I described?

2.Were do you charm beasts to be your partner?

3. Where can i catch a warthog? I want one to be my partner

4. Can I get a warthog early on?

5. Do the beats change over time? (like do they change there appearance as they level?)

Thanx for the answer and im sorry for all the questons.

1. is different, cant really help u, depends which skills u like and what not
2. charm beast anywhere really
3. Warthog in Pre-searing Ascalong near that Warrior, i forget her name
4. yes
5. no they dont change, u get more pets once u leave pre-searing eg. Spiders, Lynx, etc