As photochick sounds like broken record
: I strongly recommend getting the New Rules of Lifting for Women. The program starts with some pretty basic moves and builds up from there. There are options to modify the workouts if you don't have access to a fully gym and prefer to work at home.
If you can't / don't want to read the book, I still ahve a few suggestions:
If you find squats too hard, do wall squats (or if you have an exercise ball) ball-squats against the wall. That makes keeping your form easier.
Lunges are great too - both walking and standing. I find walking lunges easier, but some people find standing easier.
Step ups - you can use a dining room chair for this. Believe it or not, I sometimes use my guest bathroom toilet for stepups.
It's the right height and the powder room is narrow so I can use my hands on the walls for balance.
Pushups and tricep dips for your arms, back and shoulders. You can do inclined pushups on a counter top or table height, if you can't do a full on-the-floor one.
Planks for your core.
Burpees are amazing and work every bit of your body. They are my absolute least favorite thing, but they're EXTREMELY effective.
If you can get a set of resistance bands and a swiss ball, you'll add a couple dozen things you can do to spice up the routines, too.