Hi R.!
My 9 month old is still embarking on her 'first foods' journey and it is a lot of fun! Take it slow and don't stress. I too made all my own baby food b/c it's easy and not to mention cheaper!
I would wait at least 3-4 days between each food to make sure that she doesn't have any allergic reaction to it. I fed my daughter the same food, like peas, at every meal for those days to make sure she had exosure and wasn't allergic. After that, I mixed it into with whatever else she was eating.
Also, it is said that starting with veggies by color is helpful. Save the sweeter stuff, like fruit, until they've mastered many veggies so they learn to eat it all. Keep up the cereal as long as she'll eat it b/c it has other good nutrients in it. Also, make it easy on yourself...you can totally use things like cannned pumpkin from the pie aisle (just make sure it's not pie filling) and jarred applesauce, just use the "natural" kind so there's no added sugar.
I also use this website a lot: wholesomebaby.com----it gives lots of good advice, knowledge and recipes too! Good luck and have fun!