It is very user friendly! I had no problems with it at all! The program seems like its not as expensive compared other programs out there but honestly if you use this one then your looking into getting something that will be around forever!! If you have never used an expert system before or are unsure what they can do give them some time in their trial version so when purchasing make sure everything works perfectly because once you purchase things tend to go downhill from here. Being able to create more complex products faster than traditional methods has been amazing. The software is very user friendly and easy to learn. It is also very robust and has a great feature set. Nothing so far, it's a great software. Make sure you have a good understanding of the software. If you are new to machining, this software can be a bit overwhelming. I have no issues with this software, but I'm new to machining. I have used this software in my shop for several years now.