Noob T Questions.

Ok thank you. Also how much should I feed? It hadn't eaten in 3 days because I was out of town so I fed it 2 crickets today. Is there such thing as over feeding or should I feed it if it will take it

http://img.tapatalk.com/ad1cd5f7-1170-f9c2.jpg

Also do I need to be worried about this? That same leg has been positioned like that since after I fed it. I'm worried it's leg got injured somehow.

I have more questions I need help with. this is it's enclosure and there is white mold looking stuff growing on the eco earth and branches. Do I need to be worried about this?http://img.tapatalk.com/ad1cd5f7-4f70-9958.jpg

Is it mold or fecal matter? Their poo is white.