Yes, put money in, and put in as much as you can afford. Every dollar put in now has that much more time to grow (even counting occasional recessions) whereas if you wait 10 years and try and start it, you'll have to contribute 5-10x as much to try and catch up to where you would have been. Time is on your side here, unless you decide to do it 'later', in which case, you'll never get there...
Perhaps, if I am very lucky, the feeble efforts of my lifetime will someday be noticed and maybe, in some small way, they will be acknowledged as the greatest works of genius ever created by man. ~Jack Handey