How do I set shortcuts on my new onn wireless keyboard for volume control?

Question

Replacement Keyboard
Volume control issue with a non- Apple Keyboard 
[Sunday - July 29, 2012 - 2:18pm]
Question:     I just purchased a new keyboard in place of the orginal for my iMac which gave out this morning. The brand name of the keyboard is
ONN & it's a wireless board. I've encountered an issue that is a deal breaker - if there is no possible way to correct it. The volume control buttons used to
increase/decrease/mute the volume do not work on this product. I bough this keyboard because it was one of the two that was Mac compatable at my
local store. I realize you get what you pay for but hope there is a soulution!   
**Sidenote: I was curious, anyone had any other issues with these keyboards?
Some additional information:
When I woke up this morning, sat down in my computer chair, turned on my iMac and pulled up Textedit. I placed my hands on my faithful keyboard and within moments I realized that it had met it's end. I was quite upset that my original, sleek white iMac keyboard was now a thng of the past but realized that I'd need a replacement very soon in order to get my paperwork done.
Unfortunately, I did not have time to ride forty-five minutes to my local Apple store and I didn't neccesarily want to hand over the cash for one of the pricey keyboards at the time because I am going on a vacation within the next few weeks and each dime counts. So, I decided to visit a store that obviously would have the cheapeast deals in the meantime. So, I headed to to Wal-Mart to make a quick purchase
As I walked the aisles it soon became evident that today's market still is not on point when it comes to having Apple compatable hardware, softwore or anything for that matter. As I quickly skimmed the keyboards I ran across several that caught my eye, but of course, they were all made specifically for Windows. So, finally I approcahed two keyboards that were Mac compatible. The first was way too large and came with a mouse, which I did not need. The second caught my eye and I knew that this would be my purchase.:::
The verdict: an onn wireless keyboard that was both affordable and also gave off a sleek and modern apperance. (Retailed: $24.00)
So, I got home and began using the board. For the first how I was actuallly very satisfied. I like the buttons and the feel of the board. Then, I encountered a problem that made my interested for the new keyboard vanish.
The Issue:  On the boards layout, the (F2) key has a symbol that notates the decrease volume control button, (F3) of course would be the increase volume button & lastly the (F4) button represents the [mute] button.
However, these buttons don't work. Sadly, I am not aware of how I could possibly change this issue or if it would even be possible. I sincerely hope that it's possible - because I like the convience of the volume control keys - they were actually my favorite part of the keyboard. Manually changing the volume by going through system preferences does not sound fun to me once so ever. I guess you could call me spoiled but I don't think I can even keep this board if it doesn't have the ability to change volume/mute via the keyboard.
This is a shame because the keyboard it'self isn't bad at all and I actually somewhat like it. So, if you have any information or an answer to this question - I'd truly appreciate hearing your responses! Also, do keep in mind I am a rookie when it comes to computers as a whole so try to simplicate things for me if that is nessecary.
Closing negative note on this keyboard: As I typed this I started encountering a very annoying problem. As I am typing in a line, forming a sentence the keyboard would randomly start typing in pargraphs above and below as well. I'm not sure if this is something that I caused by pressing too hard with my hands or if this is a deffect. Either way, I will saving my receipt and the boxing for this product until I hear further news.
I hope to hear from you soon and I appreciate your help very much.
Have a great day,
David Travis Center

Answer 1

Safari browser and menu shortcuts:
http://docs.info.apple.com/article.html?artnum=42951
Mac OS X keyboard shortcuts:
http://support.apple.com/kb/HT1343
http://docs.info.apple.com/article.html?artnum=75459
and more useful information on keyboard shortcuts here:
http://www.myfirstmac.com/index.php/mac/articles/mastering-keyboard-shortcuts