Adding pictures to your pages will make them look nicer and will make people more apt to look at them again. To do this find the button that looks like a square with mountains on it and an arrow next to it, when you hold the mouse over it, it says "Insert Picture From File". Position your cursor where you want the picture and click on that button. With the box that pops up you will need to find that picture on your computer. When you find it click on it to highlight it and then click "OK".
Now if you want to resize the picture all you need to do is click on the picture once. When you do this you will notice little black dots on each corner of the picture and on the center of the sides. If you hold the mouse button over one of these dots you will get an arrow. Click the mouse button and hold it down. Now drag it and the picture size will follow. When you are done just let go of the button and you have a perfect picture for your page.