So. Regarding skill builds...

For WH first job, it's better to max out Jaguar Riding before Triple Shot, as max Jaguar Riding gives you more critical and speed. I went 1 Triple Shot, max Jaguar Riding, max Double Jump, max Booster/Triple Shot.

Here's my build, for more suggestions:

 1st Job Wild Hunter

10 - +1 Triple Shot (1), +1 Double Jump(1), +3 Jaguar Riding (3)
11 - +3 Jaguar Riding (6)
12 - +3 Jaguar Riding (9)
13 - +3 Jaguar Riding (12)
14 - +3 Jaguar Riding (15 - MAXED)
15 - +3 Crossbow Booster (3)
16 - +3 Crossbow Booster (6)
17 - +3 Triple Shot (4)
18 - +3 Triple Shot (7)
19 - +3 Triple Shot (10)
20 - +3 Triple Shot (13)
21 - +3 Triple Shot (16)
22 - +3 Triple Shot (19)
23 - +1 Triple Shot (20 - MAXED), +2 Crossbow Booster (8)
24 - +3 Crossbow Booster (11)
25 - +3 Crossbow Booster (14)
26 - +3 Crossbow Booster (17)
27 - +3 Crossbow Booster (20 - MAXED)
28 - +3 Double Jump (4)
29 - +3 Double Jump (7)
30 - +3 Double Jump (10 - MAXED)

 End Result

Jaguar Riding - 15 (MAXED)
Triple Shot - 20 (MAXED)
Crossbow Booster - 20 (MAXED)
Double Jump - 10 (MAXED)

 Explanation

1 Point is immediately put into Triple Shot for general damage and Double Jump for some mobility. Jaguar Riding is then maxed because it adds critical, speed, and hp; a must have. 6 Booster is then added in for some extra casting speed, while Triple Shot is then finished off for your main attacking skill in 1st Job. Booster is then finished off, and Double Jump follows. Mobility isn't that important early on, so Double Jump isn't as crucial in the early levels.

 2nd Job Wild Hunter

30 - +1 Spring Shot (1), +2 Soul Arrow (2)
31 - +3 Soul Arrow (5)
32 - +3 Soul Arrow (8)
33 - +2 Soul Arrow (10 - MAXED), +1 Swallow (1)
34 - +2 Crossbow Mastery (2), +1 Jaguar Roar (1)
35 - +3 Crossbow Mastery (5)
36 - +3 Crossbow Mastery (8)
37 - +3 Crossbow Mastery (11)
38 - +3 Crossbow Mastery (14)
39 - +3 Crossbow Mastery (17)
40 - +3 Crossbow Mastery (20 - MAXED)
41 - +3 Spring Shot (4)
42 - +3 Spring Shot (7)
43 - +3 Spring Shot (10)
44 - +3 Spring Shot (13)
45 - +3 Spring Shot (16)
46 - +3 Spring Shot (19)
47 - +1 Spring Shot (20 - MAXED), +2 Final Attack (2)
48 - +3 Final Attack (5)
49 - +3 Final Attack (8)
50 - +3 Final Attack (11)
51 - +3 Final Attack (14)
52 - +3 Final Attack (17)
53 - +3 Final Attack (20 - MAXED)
54 - +3 Swallow (4)
55 - +3 Swallow (7)
56 - +3 Swallow (10)
57 - +3 Swallow (13)
58 - +3 Swallow (16)
59 - +3 Swallow (19)
60 - +1 Swallow (20 - MAXED), +2 Jaguar Roar (3)
61 - +3 Jaguar Roar (6)
62 - +3 Jaguar Roar (9)
63 - +3 Jaguar Roar (12)
64 - +3 Jaguar Roar (15)
65 - +3 Jaguar Roar (18)
66 - +2 Jaguar Roar (20 - MAXED), +1 Mine (1)
67 - +3 Mine (4)
68 - +3 Mine (7)
69 - +3 Mine (10)
70 - +3 Mine (13)

 End Result

Soul Arrow - 10 (MAXED)
Crossbow Mastery - 20 (MAXED)
Spring Shot - 20 (MAXED)
Final Attack - 20 (MAXED)
Swallow - 20 (MAXED)
Jaguar Roar - 20 (MAXED)
Mine - 13

 Explanation

1 Spring Shot is added for damage, while Soul Arrow is maxed out to get rid of the need for arrows. Many people may say that you should leave it at 6 for now and max it out later, and that may be a viable choice for you, but I believe that at that point it's already so close to being maxed that you might as well just finish it off. Soul Arrow is, however, a preference, and may be maxed at a later date. 1 Swallow is added for the buff boosts and general 1v1 near-insta killing and 1 Jaguar Roar is added for the 100% stun. Crossbow Mastery is maxed to even out the very unstable damage of Wild Hunters. Final Attack no longer has an animation, so its extra boosts benefit quite a bit. Swallow's ~+10% attack buff (which varies around 10~14%(?)) is quite useful, as well as its 800% damage on multiple mobs and near-insta killing. Jaguar Roar's stun is useful as well to clump mobs in one area so as to finish them off with Spring Shot. Mine, however, is often very uncontrollable and doesn't have a very high damage output. As such, it's left at 13.

I'll add 3rd job stuff later.