Becca, go to the Virtual Section on the Forums page for the threads on cleaning and servicing!
Any 15x1 needle will fit your FW...the needle SHOULD go in with the flat of the needle to the left. You can use your regular machine oil on it, and be SUPER frugal on oiling the motor....more than one motor has bit the dust because of over-zealous oiling! ;)
Here's the website that has the manual for your machine (your model is a 221) ...and the attachments are an easy find on ebay! :)
http://www.singerco.com/accessories/manuals.html