tempted-fate, hard cider is pretty much just apple juice/cider fermented.
You can get yeast at a local home brew store or many places on the web. The yeast package is meant for 5 gallons, as why most recipies call for 5 gallons. You could just separate the yeast into fifths however. Yeast selection is fun. I'm using Lalvin EC-1118 right now. I heard that Red Star Cotes des Blancs works out well, but it seems that popular consensus stays with a champagne yeast. See link below for a good article on yeast selection.
If you dont have any equipment, you could just get a gallon of juice/cider in a glass jar and purchase a stopper and airlock (they'll cost you around $2) then just put the yeast in and let it ferment for a month. This isn't the proper way to do it however and you will end up with a lot of junk at the bottem of the bottle and murky hard cider. This is why two stages of fermentation are recommended. If I were limited to only the glass jug that it came in, I think I would sanitize a pot and transfer to the pot then clean and sanitize the jug and transfer back for a secondary fermentation/clearing, but then you would need proper hose to siphon with. If you do siphon, I recommend practicing as it can be tricky if its your first time.
Primary fermentation seems to take about 5-7day; untill the bubles slow down to about one per minute.
Secondary fermentation/clearing seems to take about 2 weeks - you will know when its done :P
Do you plan on bottling? Thats a whole other story. I guess you could just use the jug again and somehow cap it or even possibly tighten the lid it came with enough to create a good seal again, but beware this could be pushed off due to the pressure created. But anyhow you will need to prime it with sugar of some sort and seal it somehow.
A lot of other info available on the intraweb thingy-ma-bobber...
A good yeast selection article by Greg Appleyard: http://homepage.ntlworld.com/scrumpy/cider/ciderca2.htm
There's a good online how-to-brew book online by John Palmer: http://www.howtobrew.com/intro.html
Some instructions from Leeners (who also sell supplies): http://www.leeners.com/cider.html
Some detailed info from Gillian Grafton, Paul Gunningham: http://homepage.ntlworld.com/scrumpy/cider/cider.htm
Directions by some MIT student: http://www.mit.edu/~dfm/brew.html
Good ol' Google:
Google (Search Results)
Google (Search Results)