You can find the instruction manual for your bbq propane grill at the manufacturer's website. You can the company's name on the label on the grill and they probably have an 800-number listed as well, which you can call for immediate help.
Some stores that sell bbq propane grills are: http://www.bbqs.com/, http://www.grillsdirect.com/ and www.thebbqshop.com Those are all great and trustworthy.
Propane BBQ grills are safe and cost effective. As long as the propane tank is properly secured and connected to the grill, you should have no problems at all. Here are some grill safety tips: http://www.homeownernet.com/patios/bbqsafety.html
Most propane grills use a general propane that can be bought in any store. Portable propane grills often come with their own propane tank, therefore making there be no need to choose your own propane.
There are electric grills that are appropriate for indoor use. Standard grills, using charcoal, propane or natural gas are not appropriate for indoor use, as they produce carbon monoxide as a byproduct of combustion and is a very significant health hazard.
There is only one type of propane that can be used for your BBQ. If you go to any store that sells propane for BBQs you will be able to purchase a tank of propane. However since this is the first time you will be connecting your BBQ to a propane tank you have to make sure that you have the right fittings and hose to connect to the tank.
I believe that the most economical BBQ grill would have to be propane. The use of propane makes sense because they heat up the quickest and can be shut off immediately after use. Propane as a gas is somewhat inexpensive, still comparable to what you would use with a charcoal unit. The only real downside to propane is that you don't get the same taste as you would with a charcoal grill. Propane, to the best of my knowledge, outsells charcoal by far as it is easier to use, doesn't require multiple steps to start and can be used by virtually anyone. Propane grills are usually larger too, and can accomodate more food at one time, and can have different temperatures from one side to the other much easier than you would with charcoal. The cheapest types of grills are hibachi's and kettle type grills which can be bought for around 20$. Gas grills are the most convenient and cheapest to fuel though. Many people prefer the taste of charcoal.
Lowe's is always offering bbq grills for a low and afforable price. Home depot is also selling bbq grills for a low and affordable price also. Try craigslist too.
BBQ grills are at many websites online. Here are just a few at www.cajungrill.com/, importer.alibaba.com/BBQ-grill-importer.html, www.bbq.com/, and www.lowes.com/pl_Grills.
Stainless steel BBQ grills can be bought directly from this URL: http://www.bbqguys.com/category_path_14524.html They have a wide selection of grills to choose from.
You can buy barbeque grills and barbeque gas at Canadian tire. Try shopping online, or got to your local Canadian tire. for specific grills try cabelas.com
A good place to look for BBQ grills that are on sale would be on Sears Outlet's website. They have many different grills that is bound to suit your needs! Here is the website: http://www.searsoutlet.com/BBQ-Grills/d/products.jsp?md=ct_md&cid=928
Any home improvement store has BBQ grills for sale like Home depot or Lowes. Even places like Wal-Mart and target sell BBQ grills and all at low prices or excellent quality BBQ grills.