Let's Play A Game

Today we are going to play a little game called Name The Plant! Since we bought our house in winter, I had no clue what shape the yard was in. Now that the weather has settled down and I am reasonably confident that we won't have anymore snow this spring *fingers crossed* I have turned my attentions to gardening. There are several different types of perennials growing in my yard, however I am not very knowledgeable about perennials and I have no clue what's a flower and what's a weed.So if anyone can tell me what species of plant these are, what they are like, and any sort of tips or hints for their care that would be very much appreciated!!!!