ignition and key tumbler assembley

[joe1982]

so... my truck has been starting funky latley, i would put my key and turn it but nothing would happen. all the accessories would come on, but to turning over or ignition. but after 2-3 tries it would start. about an hour ago i went to turn my truck on and the same thing happened again. i turned the key a bit and the whole tumbler flew out! haha... i was just wondering if this is a pretty easy fix? i work tomorrow but i can be a little late to fix this, is this something that is time consuming?