Welcome to DIY Jedi! My best suggestion to you is to read everything you can in this entire DIY section. There is TONS of great info, tutorials, reviews...etc. You would be surprised to know that there are MANY posts just like yours here already..lol If ya like, you can start with the following supplier links:
http://vapingunderground.com/forums/diy-reviews-flavorings-nic-base-suppliers.393/
We are all happy to share suggestions for what works for us personally, but only you can decide what will work for you. As with anything else in vaping, it might take some time and yes you might spend a little more than you should, but man when you find it...it's allllllllll worth it! Take the time, do your research and have some patience with yourself. Don't expect that you'll be making vendor quality juice on your first batch because trust me...that AIN'T HAPPENING...LOL It's not rocket science, but it definitely takes a learning curve. Good luck!