1) It's not about supplements. The main goal is to eat a good, lean protein based diet with complex carbs. If you want to mess with keto, or anabolic (meat) diet; try it out.
Here's the thing.. when you start lifting, you are going to see great results regardless, especially if you are eating a good diet. No doubt that nutrition, training, (and sleep) are more important for any lifter than supplements, but it doesn't mean they aren't important. Eventually you are just going to plateau.. nothing you can do about it.
Like TJ alluded to.. creatine is awesome. What I usually hear though is, "you just gain water weight". Initially yeah... creatine pulls water, nutrients, and other awesomeness into the muscle cell, creating a more anabolic environment. The result is more strength, speed, explosiveness, and if you lift hard, eventually lean muscle mass. I don't currently take it, will probably cycle on it for a little bit in the winter though.
2) You need a multivitamin. Fish oils are really good for overall health and joint health.
You definitely need a multivitamin, but not just any old one at the grocery store or GNC. Get a real one. Animal paks by universal are probably the best, but vitamin paks by ISS are very good too and a little cheaper.
For good fats I'd just eat some fish, nuts (walnuts, almonds, cashews), and cook with olive oil.
I have been taking a joint supplement though lately.. animal flex, which I would definitely recommend. It has fish oil and glucosamine, among other things.
4) Glutamine. This shit is great for muscle repair. Throw it in your next post workout shake. It is really, cheap. At GNC there was a 2 for 1 special so i got 1,000g for like $35. In Canada.
It's funny, for as someone who says you don't need supplements, you take a lot and have a lot of good things to say about them.
That price is pretty typical... $30-$40 for 1000g, and thats without a 2 for 1 special. Like I said, just get your stuff online. Better variety and better price, and it's not even close. Plus you don't have to deal with those bumbling idiots at GNC...
Re: glutamine, the general concencus these days is that if you're already eating a ton of protein (i.e. bulking), supp'ing with glutamine is kind of a waste. It does have some other benefits though (immune system support for example), it's cheap, and doesn't have any negative side effects.
5) Hmm.. Creatine time. All I can say is do your OWN research on it. Base your opinions on the facts you find. Weigh the pros and cons. Just be smart with it and you will be fine.
Just drink a lot of water with it and you'll be fine.
In Canada: supplementscanada online is really good. Free shipping over $100, prices are good.
USA: bodybuilding.com .. I'd say read their forums for a ton of good shit, also buy stuff from them. Free samples too.
eh? I was under the impression that bb.com would ship to Canada... my bad.