the sim slot is that little squareish thing on the side with a pin hole next to it... you can buy a sim slot removal tool...or a paperclip or anything else the size to stick in there and push some to pop it out.
the iPhone 5 and my wife's 6 are mini/micro SIMS while my BlackBerry Q10 was the standard sim popped out of its credit card size thing....remember the old phones where you slotted them into the bottom of the phone- the whole credit card size thing.
- you can buy them if you need from the Verizon store.
what IS cool, that is kinda an advancement is that they now use the LTE Simcard as an overwrite to the MEID etc. before you had to sync your MEID of the CDMA phone to your line, then tell it the LTE sim info to get everything to sync and work- now on Verizon the LTE sim is the master for your line- whatever LTE sim you attach to your line- pop it in a phone and it takes and pushes the MEID CMDA stuff to that line- so it kinda acts like how the rest of the cell world (GSM) has been working.