Guess I will have to take the $80.00 and purchase a few books to learn off camera flashing. THIS will be a whole new concept to my photography.
I just recently decided to start experimenting with using flash myself. In the past, I only used it when absolutely necessary because I didn't know how to get the most from it, didn't know it's capabilities, didn't like the "flash look", and was honestly pretty intimidated to learn.
I've had the 430EXII for 5+ years and maybe used it for 300-400 shots. CERTAINLY not getting my money's worth. So, I decided to start learning from YouTube. :-D
Here's a video that was just recommended to me this morning in an email from YouTube that might be really helpful to you. I haven't watched it yet, but definitely will.
B&H's videos are generally FANTASTIC and this one covers how to use a Canon speedlight.
I bookmarked this next video because I enjoyed it so much and learned a TON from it. It's not specific to Canon or even using flash (although it's definitely a covered aspect). There's a really important part about how to affix an inexpensive "shield" (black textile material I can't remember specifically) to keep from blasting out people's eyes around you with flash and also to create more pleasing light/shadows that I thought you would benefit from given you primary setting for using flash. It's a GREAT video and it really got me thinking about light and specifically, which direction it comes from. I've already implemented many of the tips from it and seen an immediate improvement in my images.
Here's a really short video to show different ways to use bounce flash and the effect you get. I watched this one recently as well. It's not nearly as in depth as the others but it's probably the best place to start thinking about this stuff - so watch it first -
I'm not saying don't spend the $80 on books, but at least start with the free stuff above. These videos will probably help you determine which books will help you learn the most!
On a related note, I've just started experimenting with "HSS" (High Speed Sync) and I LOVE IT! It's a feature that allows users of certain speedlights (including the 430EXII) to go beyond whatever the fastest shutter speed their camera allows when using flash (my camera is 1/250, the 6D is 1/180, and your T3i is 1/200). Say for instance you're outdoors and without using flash, your settings are 1/2000, f/2, and ISO100 and you REALLY like the look of the depth of field of your well exposed image. Now, you want to use flash to fill the shadows of your subject because they're backlit by the sun. If you attach your flash, you'll have to lower your shutter speed to 1/200 because that's all your camera will allow. If you do this, your aperture will change to f/6.3 to maintain a consistent exposure and your pleasing depth of field is GONE! Shot ruined... right? NOPE! You simply use HSS.
By using HSS (which is easy, just press the button on the speedlight that has a lightning bolt/"H" and 3 arrows on it until what shows up on the display is the lightning bolt and H and set your camera to manual with those same settings (1/2000, f/2, and ISO100), you can now use the flash and the ambient exposure (ie, background, etc.) will be the same as it was before but you can also use the flash to fill the shadows on your subject. Personally, I like to use FLASH EXPOSURE COMPENSATION to dial back the intensity of the flash and depending on the scene will usually use between -2/3 and -1&2/3 of a stop.
Dialing in flash exposure compensation (FEC) is easy too. You can either do it directly on the speedlight (press and hold the center SEL/SET button until the lightning bolt and +/- starts flashing, then press the - button to the left of the SEL/SET button until you reach the setting you want) or on the camera through the menu settings.
It's INCREDIBLY easy to do this and provides GREAT results! This can be great for freezing action as well where 1/200 wasn't enough of a shutter speed but you wanted to use flash. Look into "overpowering the sun" for a different way to use it. You're not really overpowering the sun, just underexposing your ambient picture and then adding HSS but that's what everyone calls it.
To test it out for myself, I just took my dog outside, plopped her in the grass with the sun behind her, shot in manual until I got the exact exposure I wanted (but harsh shadows on her face and eyes), then I turned the flash on, dialed in -1 stop of FEC, and took the picture. PERFECT! I still had a slight shadow on her face (thanks to the FEC - without FEC there would have been no shadow which I think looks odd - but that's just my personal preference) but it was no longer harsh and I also had "catchlights" in her eyes which is usually a desirable thing in portrait photography.
So, HSS is VERY simple to use and can make a WORLD of difference in your outdoor photography!
Hope all this info helps!