Hey Alys,
Us Canadians have 2 options for sheltering our money from our greedy government. These options are
1) RRSP's - When you choose to put your money under an RRSP, you get a nice fat tax rebate. It's like you never earned that money at all, so the government won't tax you for it. You WILL pay tax on it when you withdraw that money. This option is great for people in a high tax bracket who want a fat refund, and who are planning on using the money for retirement at a standard 65. You can put max 18% of what you have earned into an RRSP.
2) TFSA's - When you put money under a TFSA, you pay taxes on the money (i.e. the money comes out of your normal paystream which you have already been taxed on). However, you pay zilch for any earning on that money. You earnings are sheltered for tax. TFSA's are great for people in lower tax brackets, and people who want access to their money in the near future. You can withdraw from a TFSA at any point without being penalized, and you can re-invest that money next year (you can't do this after you withdraw from a RRSP). You can contribute up to $5500 in TFSA's a year.
RRSP's and TFSA's are both PLANS, NOT INVESTMENTS. They are ways that you can shelter your investments (mutual funds, stock, bonds, whatever) from our greedy government. The major thing that you need to know about investing is that with higher risk comes higher reward. In my opinion, you should never invest in something that you don't know inside and out. For the novice investor, I would suggest starting in safer (lower return) options, because there is less chance that you will bite on a risky investment and lose your money (in a short time frame). I know that many people will disagree here, because they all want to retire in less than 10 years. I personally think it's best to keep your money safe (but not idle) while you learn a little more. I would go for a GIC or a bond for the first year while you spend A LOT of time learning. Then, in one year, when your money has grown a tiny amount, you can shift it to an investment that will earn your more. Whatever you do, don't just keep it in your lazy chequeing account.
I would start out by reading Gail Vaz-Oxlade's "Never Too Late" for a basic lowdown on Canadian retirement. It's easily digestible for the novice investor, and will give you some background. After that, you can begin doing more research, and applying mustachian principles to REALLY start saving!
Good luck! You are already most of the way there by having the discipline to save that much already! Where to stick it is the easy part!