What are you having trouble with? Math? English? Reading?
Alanna Bright can help you with your English needs. You can also contact your instructors by phone if you need to. Just go to the help tab on your My Courses page, and you will find the phone number and email link to contact any of them.
For math, one thing you can try is Khan Academy. The site has all kinds free videos that you can view. For example, if you needed help with intergers, just do a search and you'll find ten-minute videos of someone teaching you how to do it.
I second Smarthinking. It's free for Penn Foster students, and you can find out more information here: Smarthinking Quick Step Guide
Smarthinking offers all kinds of tutoring: math, writing, computers, accounting, science. The hours vary for each subject.