Rehabbing is typically an area of real estate investing that requires the most time to master. If you have ever completed any renovations on your home, then you may know what we’re talking about. Learning how to renovate properties and manage contractors takes more than just reading a book and watching a few home-improvement programs. This is an area of investing that demands dedication, time, and intensely focused hands-on experience. This process can be painful, or it can be profitable. But if you are willing to dedicate the time to learn this segment of investing, it will most likely prove to be one of your biggest revenue generators.