In posting a photo..........the 3rd icon from the right on the tool bar is the "insert photo" button. Click it and choose the "from my computer" button, then click the browse button and your computer explorer page will open. Go to the file that holds your photo and choose it. When you click the save button at the bottom, it will automatically up load to the Insert box. Make sure your cursor is at the left point you want the photo to be inserted in your post and click "upload" or "insert" button..........I forget what it's called since I do it often enough that I just click the buttons I need without re-reading them................usually. LOL
EDIT: That star may be telling you to dig at the foot of the tree for the next clue. Do so GENTLY so as not to move anything buried there. "Read" the clue and rebury it EXACTLY as found. You MAY have to return to it for more info and if you just pick it up and "play with it", you could be destroying needed information and screwing yourself.