Needs and wants determine the skills required, so here are my needs:

Food
Water
Shelter
Tools
Community

Those can be broken down as follows:

Food = Animal, Vegetable, Storage, Preparation
Water = Drinking, Plumbing, Irrigation
Shelter = Heat, Structure, Storage and Work Space
Tools = Metal, Glass, Clay, Wood, Clothe
Community = Taxes, Making Money

Under each label, I've listed the individual skills required as follows. I broke them down to the point at which I can remember all the subskills involved for each category

FOOD:

Plants-
Agriculture
Permaculture
Aquaponics
Herbs, Spices
Veggies
Grains
Sugar
Seed saving
Compost
Mushrooms
Foraging
Greenhouse
Irrigation
Soil fertility
Mulching
Weed ID
Pest ID
Pest control

Animals-
Bee Keeping
Small grazers animal husbandry
Fowl
Breeding and Rearing
Fish
Trapping
Hunting

Storage-
Fat
Cheese (waxing, press)
Milking
Eggs (candleing)
Smoking
Salt curing
Drying
Butchery
Oil
Stock
Freezer
Harvesting
Threshing
Hulling
Grinding
Storing Grain
Cellars
Canning
Drying
Brewing
Jam/Chutney/Sauce
Oils (press)
Vinegar

Preparation-
Fire stove
Cooking
Home remedies
Sourdough, kefir

WATER:

Distilling
Charcoal filter
Irrigation
Plumbing

SHELTER:

Heat, Structure, Storage and Work Space
Forestry
Game management
Water
Terraforming
Mowing

TOOLS:

Forging-
Sharpen
Shape
Quenching/carbon control
Thredding
Repair
Chain/Gear
Forge-fire
Tools

Plumbing-
Making pipe
Filtration
Heated water
Fittings
Pressure/pumps
Drainage

Glasswork-
Make
Shape
Clear
Bottle

Claywork-
Aquire
Shape
Fire
Glaze

Stonework-
Wall
Fence

Woodwork-
Roofing
Heat
Pumps
Machines
Storage
Pipe

Homecrafts-
Soap
Candles
Fire
Sewing Knit quilt
Leatherwork
Washing clothing
Predict weather
Bike

COMMUNITY:

Money-
Planning
Taxes
Sales