I used the wholesomebabyfood website too.
One of my son's favorite first foods was yellow squash and zuchinni. I'd make them separate. Cook them in water and a dash of salt on the stove. Blended them in the cuisinart mini food prep. They'd be pretty liquidy, so I'd add rice cereal to thicken it up.
I used snack sized ziplock bags to store in the freezer. One snack sized bag would be a couple of meals.
Come the fall, you can find a lot of different pumpkins and squashes to cook (bake) in the oven. My son loved the variety.
Sweet potato vs. Yams: My MIL says that the yams are sweeter (ie, better). Hard to tell a difference while in the produce section, except often yams are redder than sweet potatoes. Once I baked 3 at the same time. I did notice that the redder one was sweeter when I tasted the cooked product. Much tastier than the other, which I assume was a sweet potato.
Don't remember the age, but we were feeding my son pureed black beans before he was one year old. Cooked the beans , put in the cuisinart chopper, added some olive oil and salt. Sometimes I'd add cooked rice to the chopper. Sometimes some grilled chicken breast. Sometimes all three - rice, beans, and chicken.