Each State/Province has different requirements for real estate. There are many places online to find real estate classes. Ask friends that are realtors or that know a realtor they will be able to guide you.
There are many sites that offer classes online. It will depend on what type of class you need for you job improvement. Try this one out: www.makeuseof.com.
You can look at sites online that offer the option to find information on estate taxes. You can try Nolo and any government based sites for your area.
There are many online sites that offer medical billing classes and also offer certificates if completed. Many community colleges also offer classes as well.
There are several different sites that offer online classes for Medical coders. Which one you choose depends on the format that you prefer to study for you degree.
Many sites offer online degrees. Some community colleges offer classes to get your associates degree in criminal justice. These classes are difficult according to many.
There are many sites that offer diplomas for taking their online classes for religion. However, you can always take a class in theology at your local community college as well.
There are many sites that offer online courses for medical transcription classes. However, your local community college also offers classes for medical transcription as well.
There are free CNA classes available online. I searched for them and immediately came across www.cnaclasses.us, a free online, no registration required CNA class.there are several online sites that offer free CNA classes
There are many sites that offer prep for GRE testing but few have been found where one can take classes online. It has been found that the site Testmaster offers the classes for $899. One can also find classes at Kaplan.
Sites like http://www.loanofficerschool.com offer online classes, help prepare for testing, and have job placement possibilities as well. There are other sites that offer similar things.
Many cities offer GED classes at night somewhere in the town. Contact your district's education department to enroll in classes. Also, there are many sites online, including http://www.passged.com/ which offer training courses to help you pass your GED.
There are many wonderful online sites that offer hotel reservations. Included in these online sites are "Expedia", "Orbitz", "Kayak", and "Priceline".