I want to try something different than e4 or d4.

So everyone likes to play e4 or d4 under 2000 rated usually.  Well, if you always play a certain opening, you expect the opponent to play that opening.  You are prepared for it.  But then they stun you with a completely different opening.  Oops.  And you lose the game.  I can give you a basic introduction to a uncommon, but still possible at this level, opening called the Reti.  The Reti is played by doing Nf3.   

Here are some tricks for the trade you'll need to know to play and counter the Reti, using solidness and sharpness.   First I will show you the main lines and variations.  

1.Nf3 d5 c4 (Reti Gambit) cxd5 (uncommon with masters, but common at this level).  Now I will show you three main ways.  

Qa4+, e3, or Na3?   To be safe and not gambit more, let's play Qa4+    

Black will usually respond with Bd7, a non-solid move, and the queen takes the pawn.  This leads to quick devolopment but non-solidity.   A common variation is -

But as with beginners, they will play these moves.  They aren't good.  What you should play is Nc6, c6, or Nd7.   Let us look at some variations with c6.  After 4.Qxc4, you have Nd7, g6, and Nf6.  

This move is made for a strong e5 pawn, nice and sturdy.  You should counter with stealing the diagonal with g3 

A common position.  e5 is now under pressure, since he can no longer play f6.  Then you have Bb2 Qe7 e4! Fabuluos move.  Taking the center with a single move.
Same position, black plays g6 instead of Nd7.  

So you have a fianchetting war with g3. Obviuosly the continuation is Bg7 Bg2.   

I decided to cut the lessons short because I thought I might be wasting my time.  If you think these lessons are good, say so in the comments (I don't want to do lessons when nobody likes them.)