There are plenty of tutorials on how to make armor on the web, and a large number of shops sell applicable armor. Some commercial armor does not conform to our standards, though, so read the armor rules carefully, or ask a veteran.
With Armor (Green Tags) we mean all items that are associated with authentic Armor pieces that would protect one against damage from Weapons, such as Shields, Chain Mails or Leather armor. These Items are more closely discussed.
There is no need for buying or wearing Armor, this is a personal choice.
With Protection (Lilac Tags) we associate any protection for you body from falls, hits and other injuries that could occur during the game. Such protections are:
We recommend having this kind of protection, if you are coming more often.
Garb is a term used for garments that fit into the time frame of middle ages. Again it is a personal choice wearing it. We have people coming in all kinds of outfit, just make sure it can get dirty.
These are easy to make once you find the right foam, and strap shields are best made according to the user's arm dimensions. Instructions for a basic 2 foot round shield are here. You can use layers of camping pad foam, or buy larger quantities of commercial-strength Stratocell from Wetropa MST GmbH.
A favorite of many, as it is very malleable, easy to work with, and can be painted as well. It's is also quite light compared to chain mail and plate mail, but doesn't breathe as well as chain mail.
Leather armor needs to be at least 5 mm thick, which is thicker than most commercially sold armor. You can achieve this by layering thinner pieces of leather.
Good-looking though somewhat heavy, chain mail is a favorite armor, not least because it still allows the body to breathe. These instructables will help making it easier to make your own:
http://www.instructables.com/id/Ye-Olde-Chain-Maille-Rings/ - how to wind rings quickly and evenly.
http://www.instructables.com/id/European-4-in-1-maille-chainmail-speedweaving/ - how to weave simple 4-in-1 (they don't show it here, but it's easier to make a lot of 4-in-1's first, then make the chains by combining those)
http://www.instructables.com/id/How-to-make-a-chainmail-shirt/ - shows the design of a basic shirt
http://www.instructables.com/id/EUROPEAN-6-IN-1-CHAIN-MAIL-BEGINNERS-GUIDE/ - harder to make, but much more solid 6-in-1 mail
http://www.instructables.com/id/Riveted-Maille-from-Scratch/ - for the serious chain-mailer: Riveted mail!
Few people make their own plate armor, but there is a wide selection available online and at medieval markets. Be careful to get period materials (stainless steel allowed, though), and read the rules on proper rounding