The short answer is, despite the Standard headline, you can’t – yet – so there’s no need to be stressed. And there’s certainly no need at this stage to part with any money.
What you *can* do (and what the paper appears to be referring to) is to sign up to a mailing list operated by London 2012 which will send details of any particular events you are interested in. You can do that here. Signing up won’t, however, give you any preferential claim to tickets. Three-quarters of the 10million Olympic and Paralympic tickets will be allocated by public ballot. Registration for this will be by the website some time next year.