Super Silver

How can I obtain and download of Super Mario Land on my TI 84 Silver addition graphing calculator?

And how do I open the application once it is downloaded on my TI 84 graphing calculator?

The easiest way to do this is to download a GUI as opposed to a slightly harder to use word based kernal shell. Almost all good games for the Z80 chipset are written for some kind of kernal shell such as ION or MirageOs (MultiPurpose Shell) you must first download the game I recommend www.ticalc.org choose ti-84 and choose ASM games then pick the appropriate shell for the game you would like to play (all of this is zipped into zip files) I have no way of knowing how you transfer files to your calc but I think this model included a USB cable so use your included software to install both the shell and the game to the calc, then run MirageOs (easiest to use) then yoru game should be in the list of apps. To this date I don't believe a decent mario game exists for the Z80 platform, but there are a couple good games out there regardless (due to the Z80's lack of greyscale performance because TI underclocks the Z80 processor)