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Forget about your primary mirror for the moment.. if you took your secondary out, you need to realign that squarely under the focuser. Once that is back in place and aligned, then you'll need to adjust the tilt of the secondary mirror so that you can see the primary mirror clips equally spaced around the secondary mirror.
Then you can adjust your primary.
As David said, I started out with a film canister with a hole in the bottom.
Do some reading and some research. Collimation is a necessary skill to learn when owning a newtonian so learn all you can. I still have much to learn about 'proper' accurate collimation, but I know how to get it very close.
But John's EZ laser thingo looked pretty cool last weekend and I want to get myself one of those now too.
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