Second place to check is your local Microsoft website. Sign-up for the newsletters and check the events they are announcing. The events they organize are not always very technical but can give you a head start when it comes to new products and releases. Check this blog where they announce some sessions about some new features in SQL Server 2012.

They also organize the TechDays every year where they have a lot of sessions about different Microsoft Technologies. Make sure you check the agenda and see if there are sessions you're interested in. On the other hand it's also a place where you can meet the local MEET members and ask your questions. More in-depth sessions but also for more money, you have the yearly TechEd week.

Also don't forget to sign up for the local SQL Server User group (site|twitter). They organize sessions during the year about different SQL Server subjects. Also once a year they have their own SQL Server Days, 2 days with 3 SQL Server tracks full of sessions for almost no money. Together with other User groups they also organize every year a Community Day. Again just check if you find the sessions interesting or just go and meet the experts at the different user group booths.

If you have more budget and are allowed to go abroad, keep an eye on Pass or SQLBits they also organize events in Europe with top international speakers.
And last but not least. Instead of the money for a 5-day training and your wage, you can hire a consultant for at least 2 days who can come over, answer all your questions, audit your environment and coach you on how and WHY you should make some changes to your environment.
I'm sure there are a lot of other options to learn more about SQL Server. But this will get you started.

First there is the Partner Centers' website where you can book the training, they all list the official numbers and most of them have also the complete description. Otherwise you can check the Microsoft Learning site. Fill in the course number and make sure you read the Course Details and Prerequisites! If you don't match the prerequisites for let's say 60% and don't think "hmm interesting" for 75% of the chapters, maybe this is not the ideal training for you.

What happens when you're in the "wrong training"?
Well it depends, if you don't meet the prerequisites, you'll lose interest, get bored, and miss some essential information so you completely can't follow anymore,... You just wasted you're time and money. The same happens when you already have too much knowledge. It's good that you have some working experience before you come follow a course. But if you work for 5 years with the previous release you shouldn't follow the complete basic course of the next release. You will get the same result.
On the other hand you will also ask a lot of questions, because you don't know how to get the exercises to work or because you can ask all the exceptions you ran into the last 5 years to the teachers. In both scenario's you will annoy you're co-students for slowing down they're training experience, taking too much teacher time and so on.
As a teacher I don't mind getting all these extra questions, beginner or advanced. But I have to make sure that the majority of the class gets what they paid for so at some point I might have to disappoint you.

So if you're going to take a training, make sure you look up the available information and if you're still in doubt. Just mail or call the Education Center. They're happy to help you find the training that meets your expectations.