Do what I did not - but wish I had!! Start him now on things like avacado, hummus, various cheeses, hardboiled eggs, etc. I thought since my boys were so young, that we should go with just the basics - and lets face it, what I was familiar with.
They're now 7 1/2 and one has a great appetite and will try most new things willingly. The other is not so open. When they were around 2-4 years old, they both would eat whatever I gave them, but when they turned 4, I went back to work so we started using more basic foods and even though we were only so creative with their foods, this time frame changed things.
Either way, I do wish I had started with a wider variety of foods than I did at an early age.