As far as which blend to get, that will depend on what type of roast you like. Lighter roasts have a brighter taste and slightly more caffeine. Darker roasts have an earthier taste.
Grinding is best done at home. You can find manual grinders and electric ones. You don't have to spend a ton of money. My little electric grinder is still going strong after seven years and I paid less than $10 for it.
Preparation also depends on your tastes. With a drip pot, the water spends the least amount of time in contact with the coffee; the water is heated up and then dripped through the grounds, and gravity does the rest. With a French press, coffee is put into the bottom, water is boiled and added to the coffee, and then the preparer can decide how long to let it stand. A plunger then pushes all the grounds to the bottom and the remaining coffee is poured to drink. A stove top espresso maker lets the boiling water be pushed up through the ground coffee into the chamber above. A percolator (not used too much anymore) is sort of like a repetitive drip. Water gets forced up, then drips through the grounds over and over until the preparer decides it's dark enough.
Looking for which blend you like is as easy as buying just a quarter pound of various blends. When you find the blend you like, you've got it.
There are also issues of organic and fair trade, but they aren't related to taste.
Hope that's a start.