If you've gone with the Survival talents, you can pick up Scatter Shot at level 61. Woohoo! After that, it's back to the Marksman tree.
Skills, Levels 61-69
- 61: Scatter Shot, Explosive Trap (Rank 4)
- 62: Steady Shot (Rank 2)
- 63: Raptor Strike (Rank 9)
- 65: Immolation Trap (Rank 6)
- 66: Kill Command
- 67: Multi-Shot (Rank 6), Serpent Sting (Rank 10), Volley (Rank 4)
- 68: Aspect of the Hawk (Rank 8), Aspect of the Wild (Rank 3), Mend Pet (Rank 8), Snake Trap
- 69: Arcane Shot (Rank 9)
Skills are no longer just on even levels after level 60, so you'll want to hit up the trainer more often.
At level 66 you can learn Kill Command. This has been redesigned over time, and now buffs your pet's next three special attacks. Not as a big deal for Marksman as for Beast Mastery, but still a nice little buff. It's on a 1-minute cooldown and off the Global Cooldown, so you can macro it to something and mostly forget about it.
The last new skill you'll pick up in the 60s is Snake Trap. It doesn't share a cooldown with any other traps, so you can drop it in addition to the others. It'll release a bunch of little snakes which will run off (well, slither off) to attack and poison things in their vicinity. The snakes aren't always smart, and will run off to attack adds (and occasionall rats) in the area, as well. I love them; they make me giggle.
You're probably in Outland by now; you can get a decent gun in Nagrand from the Nesingwary quests, and if you go through Shadowmoon's chains, there's a nice bow.