How to use speedfit/push fit fittings with copper pipe/tube

To buy speedfit fittings:
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For many DIYers, using a torch on plumbing joints is not an option. The increase in popularity and availability of speedfit/push fit fittings has allowed many people to safely carry out simple plumbing jobs.
While the flexi pipe which is made for the system is useful, many people like the rigidity of copper and choose to use speed fit fittings with copper pipe.
I feel that this is the best option for novices.
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