Check out the stickied
threads in this subforum. I can name 3 online stores from the top of my head, Happy Vaper. Vapes Mart and Quitstix that can supply everything you need to get started, straight from Canada with fast shipping. Some people even import the liquids from overseas and have no problem. I also suggest you have a look around the "DIY
e-liquid" forums and have a reading. You can find PG and VG in pharmacies and flavourings from food stores. LorAnns is the one most people use and I think I recall someone saying it can be found at bulkbarns in canada. I don't think you can use any flavouring additive though, it needs to be sugar-free (and oil-free?) I think.
If your going to be need nicotine in that
juice, you will have to order online though, so might as well order the flavourings and bases if you can't get them in town. BTW don't tell the pharmasist your going to be smoking that PG lol.