Back and Forward will be inactive when you first begin your session. Once several links have been pressed, back and forward can be pressed repeatedly. For example, pressing Back twice takes you back two documents. Pressing Forward three times takes you forward three documents. Home takes you to the computer's preset Home Page.
Long waits are often due to increased user traffic.
Some documents take longer to access than others. You decide a sound, image or animation file being downloaded is taking too long to download because of its large size. Some sound and animations can be quite large and take time to download. Do not be too hasty to press Stop . While animations and sound files can be large and take time to download, the wait is often worth it.