Bike problem-changing gears?

I don't think theres anything wrong with the bike, although it is new so it may be a tuning issue.



Its a 15 speed huffy, with 5 back gears and 3 front gears. The back gears change well enough, but the front hasn't work yet. When I try to change gears it just rattles until I set it back to low. Its a clicking gear changer, and it has about 20 clicks, so I really don't know where to put it for medium or high...what should I do to fix this, or how should I change gears with this model?Bike problem-changing gears?
You need to have the forward derailer adjusted.

relief besider outer

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