Happy to help! Informative paragraphs are not too difficult if you remember what you're trying to do--inform! That means you're explaining or telling someone about something. You're not trying to persuade or argue or analyze, you're just "telling."
So an informative paragraph is usually just a topic sentence, followed by three or four "facts" about that topic. And no matter what the topic, here's the usual format for an informative paragraph:
Topic Sentence: The topic sentence tells the reader what you're going to talk about. For instance: "There are three things every new students should know about our school."
First supporting sentence: The first supporting sentence should be a fact that supports or expands upon that topic sentence. So, if you were really writing about three things every new student should know, the next sentence could be the FIRST, and probably most important thing you thought the student should know.
Second supporting sentence: Guess what that would be! Yep. Another fact, or, for our imaginary paragraph, the SECOND thing the student should know.
Third supporting sentence: Okay, you''ve got it now, right? It's the LAST thing you think the student should know. This should be the least important one, just in case your reader doesn't have time to get through the whole paragraph.
Summary or concluding sentence: This sentence sort of restates the topic sentence, but it shouldn't sound exactly the same. So in our imaginary paragraph, the conclusion could be something like, "There are probably lots of other things a new students would want to know, but if you remember these three, you'll get off to a great start."
Easy, right? My students used to use a little shortcut outline that went:
It always seemed to work well for them, so I hope it also works well for you! Get to work now--and good luck!