Help with First Outdoor Grow

Hey I am a first time grower, been reading the forums for a few days and trying to absorb as much info as I can. I think I just need to be reassured as I have read so much and am worried some techniques are only relative to indoor growing..
Here is my situation

Currently germinating
Planning on starting in a clay pot
Should the soil I use in the pot be the same as what I will be using outside? (gonna dig down about 2 feet and fill with better soil.)
Still not sure what fertilizer to get, I am in Canada and don't have access to many of the recommendations I have read. Thinking pro-mix.
How is potting soil diff than garden soil?
How much light do the plants need a day while there inside?
How long till I can plant them outside?

Thanks guys
 
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