I have never owned a Roomba so I was excited to get this one. First of all it was a little bigger and heavier than I was expecting but felt study and well made from handling it. I'm one of those people who hates reading directions and the quick start guide made it very easy. You just plug in the charger. Set the Roomba on the charger (nothing to click in anywhere as the sensor on the Roomba just lays over the sensor on the charger) and that's it. Instructions said to charge for 3 hrs the first time. I set a timer on my phone for 3 hrs. I noticed there was no orange charge light anymore or any light at all and thought it wasn't charging but I found out even the charge lights turn off to save energy as its charging. I turned it on by pressing the start button once to wake it up and again to start it. I found that at the beginning and end of cleaning it makes some cute noises.
It vacuumed my house in a very random pattern but didn't seem to go over the same area more than twice. When it bumps into things its very gentle. I let it bump into my bare feet a couple times to see if it would hurt and it doesn't at all. I would feel safe with it running around near a pet that was over 5 pounds. I wouldn't let it run when I'm not home but I felt safe letting it roam around the house without having my eyes on it. I knew I would hear it if sounding different if it got caught up on anything. It only got caught up once on a pile of rolled up lead cord and I simply picked it up. (It stops when you pick it up) and put it back down and then hit the start button to start it again. It didn't try to eat my flip flops yet raised itself over the elevated floor plates between rooms. I don't have carpet so can't try it out on that. I feel it did a pretty good job cleaning my home and it felt like I had a maid.
My only small complaints are that it seemed to spend a lot of time in one room and only ventured into other rooms for a little bit but I just put it in another room to make it concentrate on that room more. Also when I hit dock button it stopped and I hit it again to make it return to the docking station it didn't want to go straight to the dock and decided to do a little more work here and there on the way back ( sort of like a child told to come from playing at the end of the day who then decided to drag their feet on the way in) All and all its a cool little machine.
One more thing, the instruction booklet is for a Roomba 600 not this 618. I contacted the company via chat on their website and they said its the same booklet so its fine. It just shows a page with a model that has a timer/clock on it but is also says only on select models ( not on this one)
Here is a video that I made of this product: https://www.youtube.com/watch?v=EBl4H7BrjkY