Got an awesome game idea.. but I'm lagging in art stuff.. Any advice how can I manage art, even I don't know how to use photoshop properly, and I'm too young to hire an artist for the game. It's a 2D game.
There's some useful links in the BB blog for 3d art - some free, some paid, so you will have to dig around. And here's a list of some 2d art sites
Download gimp, it's free, and make your own art there. https://www.pixilart.com/draw is good for making pixel style art. also free.