That really will depend on the requirements and compatibility of the APPs and games you want to use. The Lenovo IdeaPad 3 15 ships with a 720p (HD) webcam with Privacy Shutter and Dual Array Microphones. This model ships with Windows 10 S-Mode 64-bit Operating System. Windows 10 S-Mode provides added security by only allowing APPs available ( and therefore certified by Microsoft) at the Microsoft Store. If you don't need the added security or you need to install APPs not available at the Microsoft Store, you can switch to standard Windows 10 Home 64-bit Operating System, at no additional cost. We recommend you check with the specific APPs software publisher's web sites, of the specific APPs/Games you want to use, for their compatibility with Windows 10 S-Mode 64-bit operating system and the minimum/recommended hardware requirements (Is a Graphics card required, the processor speed and the minimum required system RAM and the minimum available hard drive space) to run their program, then compare those requirements to this system's configuration. If you choose to switch out of S-Mode for Windows 10 Home, here is a link to instructions for switching from Windows 10 S-Mode to Windows 10 Home: https://support.microsoft.com/en-us/help/4456067/windows-10-switch-out-of-s-mode

The Lenovo IdeaPad 5 15 laptop, model number 82FG00EQUS, ships with a 15.6 inch (screen size measured diagonally) IPS - FHD (1920x1080) screen, with a brightness level of 300 nits, has a matte - Anti-glare coating. This screen provides 67 Percent of the sRGB (45 Percent NTSC) color gamut.

Yes you can, so long as the Flash Drive is Windows 10 compatible.

That will depend on the requirements and compatibility of the software you want to run. The Lenovo IdeaPad 3 15 Laptop, model number 81WR000FUS, ships with Windows 10 S-Mode 64-bit Operating System. Windows 10 S-Mode provides added security by only allowing APPs available ( and therefore certified by Microsoft) at the Microsoft Store. If you don't need the added security or you need to install APPs not available at the Microsoft Store, you can switch to standard Windows 10 Home 64-bit Operating System, at no additional cost. We recommend you check with the specific software publisher's web site of the software you will be using, for their compatibility with Windows 10 S-Mode 64-bit operating system and the minimum/recommended hardware requirements (Is a Graphics card required, the processor speed and the minimum required system RAM and the minimum available hard drive space) to run their program, then compare those requirements to this system's configuration. If you choose to switch out of S-Mode for Windows 10 Home, here is a link to instructions for switching from Windows 10 S-Mode to Windows 10 Home: https://support.microsoft.com/en-us/help/4456067/windows-10-switch-out-of-s-mode