Need help with plant & tree identification!

Spring has sprung and we have inherited some landscaping from the previous owners. I know almost nothing about plants or trees and their care. I would like to change that and keep our yard nicely landscaped with trees and plants. I am asking YOUR help in identifying what is already in the yard and its care. I assume things blooming now are perennials instead of annuals (in my mind, the terms should be switched as annual means yearly or once a year....they bloom once a year...instead of ONCE).

Below are 20 photos I took of the yard this week. I believe you can click on the photo to get a larger image. If you know what the plants are and how to care for them, please leave a comment on my blog with the information!!

Also, I discovered planters of rosemary and Greek oregano outside - any chances they will be okay and still be alive/grow after being outside all winter?

I appreciate any help or information you can give me!

Photo 1:

Photo 2:

Photo 3 (the tree in front with pinkish blossoms):

Photo 4 (I know it may be hard to identify without leaves):

Photo 5 (are most of these "weeds" growing under the tree?):

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Photo 9:

Photo 10 (some sort of natural grass? does it need to be cut back/trimmed?):

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Photo 18 (2 plants - the upper left looks like lamb's ear with fuzzy leaves):

Photo 19:

Photo 20 (these are all over in the front and back yards):