Without being an expert, Lorrie, I'd guess that you should make a will, stipulating what you want done. Life insurance policy payouts will go directly into your estate; thereafter, it's up to your executor to disburse monies/goods in accordance with the terms of your will.
If your son is under 18, you should also appoint a guardian — ideally someone other than the executor, as any solicitor will tell you.
I'm sure there have been previous threads on how to go about making a will, simply and inexpensively — try doing a search (once the has been restored).