My advice is to make the house liveable, that is to use what furniture you already have to make use of each room. Then slowly add to fill in the missing pieces. Look at resale stores and Craig's List for furniture, rugs, and mirrors.

Let the final "decorating" come as you are inspired. You might want to concentrate the final decorating on the rooms that you use most, usually the one with the TV--other rooms can remain bare until you are inspired or happen on "just the right thing".

Understand completely! It can be overwhelming. Prioritize needs/budget and be patient. Invest in classic timeless quality pieces such as a sofa and bed, and look in secondary markets for case goods/smalls. Furnishings that speak to you, have a story, and are accumulated over time will make your house your home…a place you’ll love to come home to. Best wishes!

Pick the color scheme. Don't worry about getting it "finished". If you like shopping, it's fun to pick up the perfect thing for your house, which won't be possible when you are "done". So, view it as a process.