I work in the design biz. and never watch any programs and rarely look at magaizines. I have a natural eye for color and arrangement.
To keep it simple and easy, yet with maximum impact start with an area rug as a focal point and then add compatible colors with throw pillows and window treatments, then move on to complementary art, paintings, sculpture, etc.
Any room can be transformed with this simple formula.
There are many relatively inexpensive decorating sources from the usual import stuff to thrift stores for unusual pieces.
All import stores such as Pier One and Cost Plus, Ross, Marshalls, TJ Maxx, Ikea, are all good sources for fun and creative items that fit your budget.
Decide on a color scheme and theme first, bold, dramatic, romantic, modern, eclectic, etc. and then implement the tips above.
Oh, and don’t forget painting some accent walls or rooms for optimum effect along with lamps and lighting to enhance the total environment.
Lighting is EVERYTHING! ( from she who has a mood lighting fetish. lol )
Most of all have FUN!