#1 Talk to an Attorney about your legal obligations.
#2 Establish who is the Executor
#3 Make an inventory of personal property.
#4 Get a fair market appraisal.
#5 Determine how you should liquidate either through an Auctioneer or an Estate specialist.
#6 Other ways to liquidate.
a. Garage sale
b. Hold an estate sale yourself.
c. Flea markets.
d. Online markets.
I recommend hiring a Professional to handle the personal property & real estate. If you choose to sell it yourself just be prepared , because this can be an overwhelming task both physical and mental.