Hello I'm new here but not new to android by any means. That being said I've got some problems here I need some help with. Not trying to blast anyone here but here we go. Okay first user accounts. Alright I tried to setup a guest account for my daughter on my next book. I looked it up in the tablet and the option was grayed out. Looked it up online and was told I needed at least android os of 4.1.4. I have 4.4.2 and it won't work. I tried updating to a later version on android is and my hardware is not compatible with the software. Next I bought a 64gb SD card put it in and can't use it. The only option available is mount SD card. I select it and then get a pop up message that says storage device safe for removal. I can't format it and I can't download anything because of "Insufficient space" on device. Like I said not trying to blast anyone but I bought a tablet to take some of the strain off of my phone I'm always on it.