a2 opening

I always make a2 move while opening, however i haven't seen many players doing same ,so should i change my habbit or is it ok??

Ahhh, I'd look into e4 or d4 if I was you, they're more the fashion in the last ummm... ever.

a2? Do you mean a3? The Anderssen Opening?

I always keep the pawn on a2 as well, through-out most openings :)

[EDIT] But yes. You probably should start with e4 or d4. e4 is a good way for a beginner to start practicing opening principles, since it opens the lines for both the bishop and queen. In general you should make as few pawn moves in the opening as possible, and a3 accomplishes nothing since it doesn't open lines for any of your pieces and is therefore a waste of time (tempo in chess-lingo).

a4 is bad as well, though many beginners play it to get their rook to the game early because after 1. a4 1...d5 black has taken space in the center and the black bishop on f8 threatens the a3 square and preventing the rook to come to the game through it.

a3 can be a worthwhile move if you have a good reason for it. It can be used to prevent your opponent's bishop from pinning your knight, maintaining centre control and and it can also create an extra square for the bishop to go so it does not get trapped. It should not be done as your first move; but probably only if your opponent has opened a line for his bishop to pin your knight.

I prefer 1 b4 or 1 h2.  The Nimzo-Larsen Attack is also comfortable.  The Grob Attack has won many, many games for lower rated players.

The Andersson opening is transpositional, thus hard to make definate assessments about it.  Novices would need to know what other openings it may lead into (such as the English).

I would recommend Andersson's opening (first played in 1837) only to those willing to play the Saint George Defense.

both 1.a2 and BillyIdle's suggestion of 1.h2 aren't excactly 'moves'. Unless they're the last pieces to go on the board when setting it up :D

if you move pawn to a3 you are restricting pieces from going to b4, but its so early in the game that black just chooses to follow a plan that doesnt involve the b4square and then you just lost a tempo. or black can answer something like 1...e5! when black suddenly is white since the a3move is meaningless and white just lost a tempo

I think a move to a3 is a defensive move and delays ones attack. But I am a dunce at this game

It's not meaningless. If the White now plays 2. c4 that will be a reversed Sicilian and as we know a6 is frequently a useful move for Black in the Sicilian. If the White plays 2. e4 that will be a reversed King's pawn opening but the Black will not be able to put the Bishop on b4 (i.e. no reversed Lopez).

If the Black plays 1. ...d5 then the White might have more trouble to prove that his first move wasn't just a waste of tempo.

1.a3 is perfectly playable if for no other reason than the fact that basically White ends up playing more like Black instead, i.e. he's more or less giving the first move to Black, albeit with a very slightly improved position since he guards b4. I mean, 1.a3 doesn't really weaken anything (unlike 1.f3), so really, it's like playing as Black with a little bit of an extra advantage. So the position is still equal (okay, not exactly, given that White's first-move advantage has a significant effect at higher levels of play, but I think you get my drift).

On the other hand, I am curious about whether 1. ...a3 still leaves both sides with equal chances. I mean, that way it's more like a move handicap.

I've always liked 1.a3, although I certainly prefer e4. I actually used it in a USCF-rated game against a friend of mine who I always lose to with White (I often lose with Black too, but I've done much better with Black than White). It's sort of an invitation for Black to play White with some openings missing. For example, against 1...e5, 2.e4 and Black can't try to play the Ruy Lopez (and there are advantages in most other openings too). If you try 1...d5, 2.d4 and the Queen's Gambit isn't good because you can accept it, play b4, and keep the pawn. In the game, my friend switched from 1...e5 to 1...Nf6, and in Nf6 it's harder to prove that a3 is useful.

a3 does not lose a tempo as it is a very useful move.