Help identify these mushrooms? (pics)

Hi. I found these in my front yard today, California. I took one apart to see it better and it was sticky and the white layers started to turn brownish. I too pictures. It seems like there's two different kinds.
First kind: (only got one pic for this)
http://puu.sh/1eVbk

2nd kind
The inside:
http://puu.sh/1eVgu

Top close up:
http://puu.sh/1eVhF

Stem opened:
http://puu.sh/1eVhY

And where I found them both:
http://puu.sh/1eViA

Any ideas? Thank you so much in advance.

 

they are not active. Agrocybe dura is a guess.
crack up cap like that..

 

NOT ACTIVE.

DO NOT EAT RANDOM MUSHROOMS.

You're not going to find active mushrooms in gardens or yards.

 

I would never pick my own mushrooms unless I had a very experienced person teach me first hand. and even then I would be pretty cautious about it. Some species of mushroom which do not contain psilocybin are extremely poisonous. Be careful.