If you heed any advice before the London Olympics begin Friday it is this: verify your cable, satellite or telephone account on nbcolympics.com so you can watch the live video streaming of all the events.
This edition of the Summer Games promises to be different from past Olympics, and it might be a real boon for viewers. Every stream from every event from London will be live. There will be no dilly-dallying as there was two years ago at the Vancouver Winter Games when NBC streamed only hockey and lacrosse live on its site.
In all, there will be 3,500 hours of live streaming video. Few will watch them all (is it possible?), but they will be there -- as long as you subscribe to a cable or satellite service that includes CNBC and MSNBC.
Still, whatever you watch, at whatever time, you will want to be able to dip into it without encountering any access problems.
Verification, or authorization, should be easy and quick. It looks simple in the short demonstration video starring Carson Daly. Go to nbcolympics.com/LiveExtra (GCI customers can go to gci.com/Olympics; MTA customers can go to mtasolutions.com and click on the London 2012 link).
From a drop-down menu, choose the cable, satellite or telephone company you have an account with. The next step depends on where you subscribe. Generally, you will have to enter the user name and password that corresponds to your account to verify your computer, mobile device or tablet. If all works well, you will never have to verify again.