a couple questions for a new photographer

[Fotografer]

i haven't gotten my slr yet, but i want to get into photography. i read a couple tutorials on the internet and i have a few questions...</p>
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<p>why would you want a shallow dof, if you can just use a bigger aperature and use software to blur your image?</p>
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<p>should i be shooting in RAW camera mode? I don't know what that is, but i heard someone talking about how they always take pics in raw mode</p>
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