Linux crontab-e command Insert and save __linux

Though that's what the internet says,

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Log on to the command line as root

Input CRONTAB-E

Press the A key to enter edit mode

Input 0 */1 * * */home/work/start-service.sh

Press CTRL + C to exit edit mode at the same time

Press shift+: Enter WQ exit crontab

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but has been unsuccessful, is very helpless. Then look at the hint,

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Select an editor. To the change later, run ' Select-editor '.
1./bin/ed
2./bin/nano <----easiest
3./usr/bin/vim.tiny

Choose 1-3 [2]: 1

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suddenly understand, to first select an editor. I chose 3, try again, was successful.