Hello Samsom,
I cant ping the outside interface from my inside host.
Expected behavior, is well documented that you cannot ping a far-end interface, that means that if you are on a PC on the inside interface you can ping the inside interface IP address but not the ASA outside interface IP address.
You should be able to ping any other device on the outside interface except the ASA outside IP address.
Add this
fixup protocol ICMP
and then try to ping 4.2.2.2 from that inside host.
Also check this my friend (A video that I made on my website)
http://www.laguiadelnetworking.com/video-1-basic-setup-of-an-asa/
Remember to subscribe to my website and rate all of my comments
Julio Carvajal
Senior Network Security and Core Specialist
CCIE #42930, 2xCCNP, JNCIP-SEC