Is there a way to practice the dutch defense here?

I ask this question because most players as white will play e4 instead of d4. How do you practice a new opening or is chess,com a bad place  to practice?  

Not sure if this works for standard members, but if I wanted to practice the Dutch I could go Learn>Openings>Dutch.  Then I'd look for the little symbol of an open laptop and click on that and I'd have a game against the level 25 computer.  Lately they added the bots to your choices so I could choose one of them instead.  Of course before doing all of that I'd want to spend some time exploring lines at Learn>Explorer.

You might have to set it up using custom game.  Not sure how much of the "good stuff" standard members are getting these days.  Hope that helps at least a little...

Another way to do it is to go to Learn>Analysis, key in the first few moves and then again look for the little laptop symbol (finish vs. computer) and click it.  

The Dutch were always known not for their defense but because every piece could defend and attack at the same time, if not for the Germans they'll be World Champions

Thank you 

Glad to help....

This is best if you don't mind games with a computer, but personally I like playing with people. I'd recommend finding a chess.com friend who will agree to test the opening with you. I've done this several times with various openings/lines. We both agree to play x and then continue the game from there; usually we play several games of blitz and analyze them later, but you could use whatever time control I guess. 

I wouldn't mind practicing both sides of the Dutch Defense if you want someone instead of the computer (which is fine too I suppose, but computers don't make the same kinds of moves as human players).

You can use daily games. Create a challenge, set the starting position of the game to the starting position of the Dutch and choose to play as black.