This isn't directed at any one person, but I am so sick of the same old questions being asked over and over again. We're all guilty of it and I totally understand it from the newb perspective (I was there too). I went through this thread and a few old ones, and heres some answers to very common questions. Feel free to quote it, add to the OP, whatever. These questions are asked pretty much daily, so maybe this will help subside that a bit, they are not covered in the FAQ that Rig posted.
ORDER FAQ
Does Trainn provide tracking numbers?
No. Although the site states that a tracking number will be provided if it becomes available, the majority of the regular users of this site have never received one. However, considering the majority of their orders are from retailers, you can email Trainn if you feel your order is late or hasn't arrived and they can look into it for you. There have also been reports of people receiving tracking numbers by requesting them directly from Trainn, but that is definitely YMMV.
I ordered ____ on (day). When will it get here?
None of us can answer this with a definitive answer. Trainn doesn't work like a retailer. Using information from the regular users, it seems that they have specific days of the week that they place orders, but it changes at times. Once shipped, you can expect your item to arrive anywhere from 3-10 days.
Note on Guitar Hero III
This game is an exception to the above. There have been reports of it taking weeks-months to receive once you put the order in. This is getting better lately, but there is still a delay from the norm with this game because of it's popularity amongst users on the site.
Where do they order the games from?
They order the games almost exclusively from Amazon. On occasion if a game is very popular (i.e. the 2007 holiday season and GHIII) they will order from other vendors, like Circuit City, or even shipped directly from Trainn themselves.. This is not the norm though. Most of the time they will be from Amazon.
How do the games ship?
Almost exclusively UPS, like the vendor question though, there are exceptions. There have been reports of games arriving via FedEx and DHL, but again, these are exceptions to the rule. If you're ordering a "regular" game, 9/10 times it will come UPS via 1st or 2nd day air, and same with GHIII, most of the time it's UPS, but there are exceptions.
1st or 2nd day air? WTF?! You said above that I shouldn't expect it for 3-10 days!
This applies to the somewhat "erratic" way that Trainn processes orders. Even if you receive a shipping email on say Monday, it's not guaranteed to have been ordered/shipped from the vendor yet. The regular users have come to see this as the day the order was placed, but not necessarily shipped. Rest assured, your game is likely in the next queue to go out, and it will be to you shortly. Again, there's always exceptions. The author of this FAQ once received a shipped email on a Wednesday, and the game on that same Friday. However, most of the time it's about a week to arrival from the shipped email. There also seems to be multiple order days per week. It just depends on when the game is physically shipped, not when you receive the shipped email.
What game should I order?
You're on one of the best video game communities on the Internet, head over to the dedicated 360 section and read some user opinions, or go on over to a review site like IGN, Gamespot, or TeamXbox and read some reviews. Don't limit yourself when trying to choose. If you're on the fence about an order, you can always stack your credits and wait until something comes along that is what you really want.
When does ____ come out? When will Trainn add ____?
Amazon is very reliable with release dates for the most part if the game/item has a definitive street date. Just search for the item on there and look at the description, you can even see future dates for preorder items on the search results. The 360 section here has threads dedicated to many games, and chances are the release date will be in the first post of that thread or even in the subject. Trainn normally updates 1-2 times per month, however this is not scheduled and tends to be different every month. They usually will add the next months releases in an update, but there are occasions when they will get things that are pretty far out from release. If the recent posts are talking about an update, chances are theres some new choices.