Okay so I havent played the original Mass Effect yet so I have started out playing the game. My question is which class should I choose? 
 
Also should I just skip to the 2nd game when it comes out of keep playing Mass Effect?

Play as a Vanguard. Trust me, it works.

Well, I have started with a soldier but it feels like I am missing out on a lot, am I?

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Well, I have started with a soldier but it feels like I am missing out on a lot, am I?

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Soilder is the best imo, I could be wrong, I used infiltrator, they gimped my ability to snipe well and the use of heavy armor. I think soilder class is the best because you get everything that way including heavy armor.

Play Soldier till you unlock Assault Rifle, go Adept with AR as special talent.
In the end go Bastion - which beats the ability to use Heavy Armor since Bastion's Barrier regenerates over time and is up 24/7 (as long as you don't forget to 'rebuff').

I enjoy playing soldier a lot. But it's really up to personal preference. As for whether you should play it before ME2 - I'm doing that at the moment. I've started playing ME twice, but never finished it. I intend on completing it before I start ME2.

Vanguard is the best, good mix of biotics and weapons

Vanguard.

Vanguard and adept are my favourites. I recommend Vanguard for your first playthrough

What classic RPG archetype do you usually like?
 

• Warrior - Soldier
  Pretty obvious comparison.  This class is all about doing damage with weapons and drawing all the fire, as you will have heavy armor.  Good class to begin with, but IMO, not that much fun.  The shooting mechanic in ME is mediocre; the best part about combat is the fact that you have all these powers to attack your enemy with besides weapons.
  
• Mage - Adept
  Your job is to use your magic spells (biotics) to do crowd control, while you team picks them off one by one.  You don't have much armor, so you will want to stay away from the action, throwing out your biotics from afar, or using them as a means of escape when an enemy finds a way to get close to you.
  
• Warlock - Engineer
  Also staying from afar, you will debuff your enemies to make sure your teammates can take them out as easily as possible.  Take out their shields, preventing them from using biotics/tech, and disabling their weapons is what you do.  You can even cast a spell to take control over an enemy and use it against its own troops.
  
• Hunter - Infiltrator
  You get proficient at using a sniper rifle, so you obviously want to stay away from the action.  Your teammates are basically your pets, doing damage to your enemies, but more importantly, distracting them and bringing them in the line of your fire so that you can take them out one at a time.  You will also have some debuffing powers to make sure your teammates won't die when drawing all that fire.
  
• Rogue - Vanguard
  The Infiltrator is probably a better comparison in ME2, as they actually get the ability to cloak.  I made this comparison because the Vanguard is all about get right up in the face of your enemy and doing a lot of damage really quick with your shotgun.  You only have decent armor, so you need to use your biotics to leave your enemy defenseless as you run through all of them and doing as much damage as you can in the shortest amount of time.
  
• Priest - Sentinel
  All classes have the ability to heal with medi-gels.  Sentinels are kinda like priests because you are meant to stay away from the combat as your teammates fight; you do not have any weapon proficiencies to do any real damage.  What you need to do is take care of both crowd control and debuffing the enemies.  This is arguably the hardest class to play in the game.
  

My advice is to play Soldier first so you can unlock the assault rifle, then play as an Adept with the assault rifle skill and just tear through guys while tossing them around.  If you play as any biotic class that has access to "Singularity" that skill is your best friend.  The Soldier class was easiest in my opinion, but Adept was the most fun.

"My advice is to play Soldier first so you can unlock the assault rifle, then play as an Adept with the assault rifle skill and just tear through guys while tossing them around.  If you play as any biotic class that has access to "Singularity" that skill is your best friend.  The Soldier class was easiest in my opinion, but Adept was the most fun. "

adept is where it is at.

Gaaah! All this time wasted on Mass Effect =O should I just start again on adept or continue soldier?

Vanguard is hellla tight, bro.

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Gaaah! All this time wasted on Mass Effect =O should I just start again on adept or continue soldier?

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" @Yukoei said:

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Gaaah! All this time wasted on Mass Effect =O should I just start again on adept or continue soldier?

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If you are just playing through ME1 so that you can import your save to ME2, you can just keep playing as the soldier.  ME2 allows you to change your class in ME2.  Also, have Tali and Liara with you throughout the whole game.  This gives you a good balance of both weapons, tech, and biotics.  If you ever find yourself dying a lot because Tali and Liara cannot keep themselves alive, switch to Garrus and Wrex.  You trade off some tech and biotic skills in order to have more fire power. "

My personal favorite is the Vanguard, but soldier is good starting class for someone playing for the first time through.  But after playing other classes I found the soldier class to be very boring.  The biotic and tech stuff is where the real fun is had.

I played as a solider my first time.  Second time around I decided to play a Vanguard.  I'm liking the vanguard more right now because I feel there's some more strategy involved.