All the above is good advice, but let me suggest an alternative. Don't dry it all. Let some weather, preferably in a damp environment. Hopefully, over time, you will get some nicely spalted pieces. It a bit of hit or miss so I would not recommend doing all of it this way and it's impossible for me to tell you how long to let it go. Probably at least 6 months. Check it and if it's not well spalted use it for firewood or turn it as is. Attached are a couple of pics I got from ignoring a section of sugar maple that the State took down from my property because it was old and too close to the road. Also a pic of a pen I made from some. The blanks and pen used stabilized sugar maple.
Depending on the degree of spalting, stabilization may not be necessary. Good luck with it and keep having fun.
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