Hello, new to gardening and have a new house with no landscaping. I live in the midwest.

-I want to plant some shrubs (maybe flowering shrubs) but I want to know I can do this in the fall. If not, what CAN I plant in last summer/early fall?
-What is the difference between Deciduous Shrubs and Evergreen Shrubs?
- Can I plant flowers in late summer/early fall? The kind that come up every year? (I think these are called Perennials?) Any recommendations?

Thanks so much in advance!