Most traders who do this "training" during the day DO NOT MAKE MONEY. You are absolutely right in asking this question, even though as in almost all the boards here people just love to jump down your throat. Their are a few big traders that teach intraday, but it's not really teaching. You used T3 as an example, I'm familiar with the firm as they have one trader that used to be with broadway that is very successful. He teaches either before or after the close, during the day he is basically on the microphone just talking out his positions. While this is great for a novice trader to hear why he got in and why he got out, in actuality he's just saying his process out loud instead of in his head, so it's not like he's doing anything he wouldn't be otherwise.
Even though there are one or two guys out there that basically spoon feed you trades and make a lot of money themselves, most guys who teach online especially during the day run a business and DO NOT MAKE THEIR MONEY FROM TRADING. There are many firms out there where the teachers are trading 1000 shares of Citibank and preaching to people who spent good money to learn from an experienced guy. Just b/c someone is experienced doesn't mean that they're good. The guys that actually make money might be on the mic, but they also have size on and have their size and price on the screen for you to observe. THERE IS A BIG DIFFERENCE BETWEEN GUYS WHO TALK OUT THEIR OWN TRADES AND GUYS THAT ACTUALLY TEACH DURING THE DAY.
Many shops let you demo their TEACHING ROOM, or whatever they want to call it, for free. Sample a few of them out and make sure that the guy teaching is actually trading and making money. I have sampled many of these rooms to see which features I wanted to use in my own Teaching Room, however I decided against it. The reason that firms have these rooms is to make money, which is only fair if they are helping you make money. Just be sure who is teaching you and HOW MUCH THEY ARE MAKING.
I sampled the t3 room, some hold brothers sub group rooms, keystone room, assent sub group rooms, dimension and their subgroups rooms and so on. The only one out of all the 15 or so I checked out that was worth subscribing to was the T3 room. It was the only room that was well put together, had tutorials all day and most importantly had a MULTIMILLION DOLLAR PRODUCER on the radio all day. Don't get me wrong, I don't trade with them and will say that there were a few guys on the mic that I personally wouldn't follow trading, but there big sell point to me was that a trader making millions a year talked you thru what he was doing while he was doing it.
All of the other groups were awful in comparison, which is when I decided against doing my own room. To be blunt, I wasn't looking to sink that much effort and money into an online room and to be competitive enough to justify charging an amount of money that would be worth my while I would have had to be at their level.
To conclude I will say it again, make sure you know who's trading and can see their position. I previewed assent, hold, Keystone, etc and all of these internet rooms had the owner of the firm going thru slides and trading bullshit stocks. If you're trying to learn don't pay to learn from the guys that Charge a TRAINING FEE, learn from guys who will charge a monthly fee where you can cancel if not satified. I watched some of the bad rooms and was sickened by watching guys who claimed to make money consistently and really only made money from the website. Just ask yourself the same question I did, WHY THE HELL WOULD I WANT TO LISTEN FROM SOMEONE WHO CAN CONSISTENTLY MAKE MONEY IF THE MONEY HE/SHE IS MAKING IS 200 BUCKS A DAY. And that is most of these sites were like. Someone sitting there teaching you to scalp shares of stocks that don't move while they themselves are trading the same pieces of shit all day. Why would anyone be trading 2000 shares of C for a five cent move who is supposed to be a PROFITABLE TRADER. If you compare something like that to a model such as a T3 or similiar you are watching one guy make 200 bucks grinding bullshit stocks and the other trading up to hundreds of thousands of shares of whatever is in play and that actually have a traders range (minimum 10% move in a cheaper stock or atleast 4-5% on an expensive stock)