The very FIRST thing I would do if I won 10 million dollars is MOVE... lol, change my phone number, change my address, maybe my name (LOL i don't think i'd change my name) and avoid all the FRIENDS and FAMILY (I've never known) who would start calling me or coming by and asking to borrow money.
Then I would phone my parents and tell them their new address of the house I just bought them and to check their bank to make sure the money I sent them is there. I then would send my 2 brothers some money and probably shop, shop, shop furnishing my new home and looking at a new car and truck to buy. And in spite of my son's dad, I would buy a Land Cruiser, take a picture of me in it and email it to him to make his day (the Land Cruiser is his fave vehicle) and then a couple days later I'd email him again to tell him I gave it away because i don't like the Land Cruiser.
With the left over money I would invest, make a few donations to the Canadian Cancer Society, the SPCA (i love animals), and other organizations I can't think of now.... and then buy a million dollar life insurance policy on myself with my son as the beneficiary because his dad will be looking for me to kill me.... lol
oh and of course play in the WSOP with eejit