What you should play : if started

"... For players with very limited experience, I recommend using openings in which the play can be clarified at an early stage, often with a degree of simplification. To accomplish this safely will take a little study, because you will have to get used to playing wiith open lines for both sides' pieces, but you can't eliminate risk entirely in the opening anyway. ... teachers all over the world suggest that inexperienced players begin with 1 e4. ... You will undoubtedly see the reply 1 ... e5 most often when playing at or near a beginner's level, ... After 2 Nf3, 2 ... Nc6 will occur in the bulk of your games. ... I recommend taking up the classical and instructive move 3 Bc4 at an early stage. Then, against 3 ... Bc5, it's thematic to try to establish the ideal centre by 4 c3 and 5 d4; after that, things can get complicated enough that you need to take a look at some theory and learn the basics; ... Of course, you can also play 1 d4 ... A solid and more-or-less universal set-up is 2 Nf3 and 3 Bf4, followed in most cases by 4 e3, 5 Be2 and 6 0-0. I'd rather see my students fight their way through open positions instead; however, if you're not getting out of the opening alive after 1 e4, this method of playing 1 d4 deserves consideration. ... a commonly suggested 'easy' repertoire for White with 1 Nf3 and the King's indian Attack ... doesn't lead to an open game or one with a clear plan for White. Furthermore, it encourages mechanical play. Similarly, teachers sometimes recommend the Colle System ..., which can also be played too automatically, and usually doesn't lead to an open position. For true beginners, the King's Indian Attack and Colle System have the benefit of offering a safe position that nearly guarantees passage to some kind of playable middlegame; they may be a reasonable alternative if other openings are too intimidating. But having gained even a small amount of experience, you really should switch to more open and less automatic play." - IM John Watson in a section of his 2010 book, Mastering the Chess Openings, Volume 4

King's pawn opening is the best ( e4)

1. d4 d5 2. Nf3 Nc6 ???  If you just started playing chess you should ignore this person, who is simply confused...(he probably meant 1. e4 e5)....

Instead, check out...

Chess Openings Resources for Beginners and Beyond...

https://www.chess.com/blog/RussBell/openings-resources-for-beginners-and-beyond

https://www.chess.com/blog/RussBell

He is not completely wrong the queen's gambit ( d4) is the second most popular opening and d5 is the second most popular response. Nf3 and Nf6 are not horrible either, they are fair move's for beginners. Now I agree with you I would stick with e4 for new players. But it is not like d4 is the worst possible move. 

In my post above, I just corrected my typo (Nf6) which I meant to be Nc6, reflecting the OP's recommended sequence of 1.d4 d5 2.Nf3 Nc6.  That is 2...Nc6 is not a good or mainline move in this particular opening sequence.  Again, I believe the OP meant to say 1. e4 e5 2.NF3 Nf6 etc....

Still not horrible the explorer note's it at pretty common if white play's d4
https://www.chess.com/explorer?moveList=d4+d5+Nf3+Nc6&ply=4

There is nothing wrong with the move 1.d4, but the OP did not stop there.

1.d4 is not the Queens Gambit (it is simply a first move for White, and which could eventually end up as the Queens Gambit opening after a few more moves if the sequence 1.d4 d5 2. c4 (The actual Queen's Gambit) is played.

Finally, there is nothing in the OP's original post about White playing d6.....now you're confused...

Firstly, Let me correct I meant d4 instead of d6
Secondly, Let me apologize, when I said Queen's gambit in my earlier post I had instead meant the queen's pawn opening. You are right the queen's gambit is 1.d4 d5 2. c4 and not what he suggested.
Lastly. 1.  d4 d5 2. Nf3 Nc6 which is known as the Queens Pawn Opening: Zukertort, Chigorin Variation is a fairly common opening. Although it is not as common as the king's pawn opening or the Sicilian defense, it is still a fair defense in comparison. The explorer put's it at a considerable number of game's. In addition,  display's no advantages for white or black.  I also found a good number of champion's who have used this defense including our current champion Magnus Carlsen as well as the former Garry Kasparov. 
In summary, I think that calebzeng133 statement is still valid, and is a good suggestion in addition to plays such as the king's pawn opening.  My sources are below

https://www.chess.com/games/view/13749565
https://www.chess.com/games/view/14442415
https://www.chess.com/games/view/13136229
https://www.chess.com/explorer?moveList=d4+d5+Nf3+Nc6&ply=4
https://www.chess.com/a/4SuBqRCSi2Tg

d-d4?! What about 1.a3........! 😱