Hi! My name is Parker Tomlin and I am a junior majoring in exercise science with a minor in coaching. I am from Westerville, Ohio. In my free time I like to play baseball, play video games, and lift weights!
I do not have any prior experience with ArcOnline, as I did not take 291. The introduction page had a great overview of what ArcOnline is, and how it is used. You can explore data in both 2D and 3D, collaborate with people in and out of your organizations, and use analysis tools to understand your data better. You can also share maps easily by embedding them into web pages or social media.
The introduction course was all completely new information to me. The step-by-step guide the tutorials offered was simple and easy to follow. The quizzes at the end of the blocks were good to make sure I understood the things being reviewed. Learning how to create a new map and use online data sources, which we did with snow trails in the Sierra Nevada was also very useful for putting the skills we were reviewing to use. 
I like to fish during the summer, so for my first search I searched for “ArcOnline Bass” and found a map looking at tidal bass habitats and the quality of their spawning zones throughout Washington and Maryland. Areas that were severely degraded looked to be areas with large towns or cities.
https://www.arcgis.com/home/webmap/viewer.html?webmap=82c67b8eba954e478ab84eab46fb0cb3&extent=-78.1535%2C37.8358%2C-74.0968%2C39.7072
I searched for “ArcOnline Grizzly Bears” next, and found a map looking at general grizzly bear locations. The population of grizzly bears seems to be concentrated in Canada, specifically in British Columbia. A small population of bears exists in upper Montana as well.
https://www.arcgis.com/apps/mapviewer/index.html?layers=aa9c54be4b5a4db5beaf9cdc3bbf6fe8