How much should I have in personal savings before I start investing ...

I am 24 years old and make $35,000 per year and I currently have $4,000 in personal savings. My company only matches contributions after a year of employment but I was thinking of starting my retirement fund before then. Is $4,000 enough of a cushion to start putting money towards my retirment fund?

Source: http://retirementplanning.investblogs.com/2012/12/26/how-much-should-i-have-in-personal-savings-before-i-start-investing-in-retirement/

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