The datasheet has all the info you need, though comprehending datasheets is something that just comes with time and meddling with stuff
This is a RGB driver, so what you have is one per LED (and in turn there are 3 LED's per package), if your using just one color LED well ... you have a chip that can drive 3 LED's, if thats the case ignore the whole RGB on the sheet.
Page 2 is what I call the death page, it shows you min and MAX ratings of the part, its best to stick near typical, and never exceed max ... in fact dont get within 10% of max.
If you scroll to page 5, you will see how to chain them
Page 8 shows you an example using the part to modulate a high voltage side, ie if you wanted to some rebels at 12 volts pushing 300ma, which one will leave you color blind for a second, hate to imagine a large wall of them...
Page 9 shows you an example if your LED's exceed the current ratings of the part (50ma per channel max)
12 shows you an example of clock vs data so you can program it .. if there is not a library already (and if there is not, theres plenty of help here)
and page 15 shows there is a though hole DIP package, but f if I know where to fine one heh
I think your biggest issue is going to be finding a power supply for a wall-o-LED's, and maybe speed depending on row * column * *colordepth (or grey scale) counts
Yeah I've seen some of maxims stuff its really nice but so expensive D:
OMG yea maxim is expensive, I recently went out to find MAX232 chips, they convert normal RS232 serial signals to inverted TTL serial signals that are micro happy, at digikey for the maxim part is 3.76$ EACH, the totally compatible, slightly better performing Texas Insturments clone .... 85 cents each
guess which one I chose