This is MY opinion from my experience hope you enjoy!

For starters in this guide i will not tell you which armor to get at low level’s this more of a lvl 50+ guide as far as gearing goes.(if you want more info on low level gear look at Premium’s R/K guide which has info on low level gear, it applies for both classes.)

I will be going over which skills to use how to use them and when, to maximize your DPS. Which is and should be the main goal of any R/S (because your not very good at anything else.

Skills: Rogue Side
1. Dagger Mastery-keep maxed at all times.
2. Shadowstab/Blindspot-The skills you use to start your combo. These have actually started a debate over which to use. My advice is try both and see which one you like better because your using them to start your combo to deal the true damage of a rogue, Which you use wont make a big impact on your dps what so ever.(i used blind spot when leveling and only at 50+ did i level my shadowstab).
3.Low Blow-keep as high as possible can be one of your more important skills.
4.Wound Attack-your highest damage skill try to keep it as high as possible.
5.Combat Master(30 elite)- As a R/S this is your bread and butter skill after you have it your damage will increase with every level you + it.(my advice is to keep it MAXED at all times this is skill is what makes you good.)
6. Evasion- Very useful skill on account of us R/S being squishy keep this ready for hairy situations.
7. Off Hand Mastery-fairly useful don’t put too much tp into this at lower levels.
8. Coerce(45 elite)- This skill can greatly increase your burst damage is used correctly(will be covered in the "How to" section).
9. Fervent Attack- This skill is also used to increase burst damage don’t level it till you know how to use it.

Skills (Scout Side)
1. Vampire Arrows- very nice DoT skill keep it high.
2. Shot-Nice ranged damage skill keep it high aswell.
3. Speed Shooting- Increases how much you can use shot, increasing your sustained dps.
4. Swiftness- Inherent Dex Increase.
5. Joint Blow- Useful snare good for many situations including pvp no need to level past 40.

Now that you know what the skills are and which to level, I will tell you how to use them. How you use your skills alone can be one of the biggest factors in your DPS.

How To (Skill Usage)
Ok this is for Short fights aka questing, dailies etc. 

Find a Target in bow range from you.
Premed–>Shot–>Vamp arrow–>Shot–>Blind Spot/Shadowstab–>Low Blow–>Wound Attack–>Low Blow. If your target is not dead you’ll be out of energy so use the first 3 skills in the combo till your energy is back finish off with a low energy skill. 

Boss fights.
Use the same combo, but the key to dps in boss fights is when and how you use your cool down skills(Assassin’s Rage, Energy Thief, Fervent Attack). Once the boss you are fighting is down to around 30% get ready because your about to unleash the biggest burst damage in the game,MAKE SURE YOUR TANK HAS AGGRO!!! Fervent Attack–> Assassin’s Rage–>Energy Thief–>Shadowstab–>Low Blow–>Wound Attack–>Low Blow(till your wound attack is recharged)–>Restart Combo. Do this till your cool downs have ran out. 

Now for Some Q and A on the last section.

Q:Why wait till 30%? A: Doing this allows you to use energy thief to spam Low Blow, a very high damage skill and keep your Coerce up(only lasts 5 seconds) raising your weapon damage by a %, raising your dps even more.

Q:Why use your bow skills in between your combos? A:This is the key to a R/S if you don’t use your bow skills your sustained dps will be absolutely horrible, and you wont be better than any other rogue class at dps rendering you useless to a party. 

Gear 55+ 
Just to let you guys know you don’t run into Hoto with a t5 dagger and 0 yellow stats on your armor hoping to do anything but wipe to the rays. Gear doesn’t dawn on you because your awesome you need to put in the work to get your gear in level’s once you get to 50+ you want to start working on the Black Victory set, then once you stat you can go to hot and so on, just my insight here.

As i said before your first set should be the back victory set anything more than the 3 piece isn’t needed. 

At this level Stat your Pieces With around a 50/50 dex/stam ratio(this isn’t what it will be later on.)

Use stats like Fang V Barbarian VI 40 dex 45 dex 40 stam 45 stam (possibly throw in a dodge X on some pieces). This will give you a great balance of Physical attack and hp/stam with all easily attainable stats. Finish off the rest of your gear with 51+ clean white items with the same stats.

Get a Green short blade or if lucky a Al-Lanja Assassin’s blade t7-t8 it and your ready to go to heart of the ocean. Make SURE to stat your offhand and bow. If you have 12k+ hp and 6-8k physical attack your more than ready for hoto, which means you have access to the Dark shark set and yellow VII stats. 

Get at least the 2 piece Dark Shark(i use all 4) but its up to how much your willing to farm. Stat them with the following stats:
Cruel VII(should have 1 on every piece.)
Razor VII(as many as possible)
Fright VII(as many as possible)
Slaughter VII(nice stat)
others are your choice i would go for a suppression or eruption or Epidemic XI if possible. 

PvP (Mostly Arena Advice) 
R/S is one of the more versatile pvp classes can do huge burst damage and is a formidable opponent for every class. Yes you are OP. If possible Start every battle in hide.

VS Warrior: Before you engage use premed and evasion and go to town if you are getting hit to hard use Joint Blow and kite while shooting arrows till dead, there isn’t much he can do. Blind stab is also useful against all mele characters.

VS Rogue: Your most challenging opponent especially R/K it gets down to who can shadow prison first, the best strat i have found is use evasion as soon as possible its your best defensive skill your dead with out it. Other than that kiting and slowing are your best defense. But the main philosophy of a R/S is a good offense is the best defense so use your burst damage to your advantage and kill your target asap. Blind Stab is also useful against all mele characters.

VS Mage: Easy if you do it right, you are the one class that can surefire kill a mage every time if you do what i tell you to correctly. Start the fight in hide, get as close as possible to him use shadow prison start your combo by the time you use low blow use Throat attack a 4 second silence the finish with wound attack and run as fast as you can while shooting arrows. your target should be dead.

VS Priest: Slightly Harder than mage to kill but nice because you don’t have to worry about getting killed in 1 shot, use shadow prison and throat attack the same way you did with a mage chaining them together for a 9 second disable giving you all the time in the world to unleash your crazy burst damage.

VS Scout: I haven’t had very much experience with scouts but ill give you my best understanding on how to beat them, you want to stay as close as possible if they get you far away your dead, use your Shadow prison, Hide and Joint blow to keep them close range use evasion and use your combo’s, mind you he will do the opposite to you trying to keep you as far away as possible.

I Hope this helped with everyone wondering about R/S and i hope it helped the many R/S’s out there who didn’t know how to play their class

Post questions here ill try answer as many as i can. 

Credits go to Legless.