Yes, you can install your operating system onto a flash drive.
Yes, you can install your operating system onto a flash drive.
You should check your available timeframe and see if you have the necessary resources to assemble a PC.
Yes, but you really shouldn't for a number of reasons: 1) It'll be really slow unless you have a great flash drive. 2) You can't directly install Windows onto the flash drive like you can a normal SATA or NVMe drive. 3) You run the risk of wearing out the drive rather quickly as opposed to a proper SSD. Just get yourself a cheap SSD if that's all you can afford. It's a MUCH better solution than installing your OS onto a flash drive. Just to add: some Linux distros run alright from USB flash drives, but I still wouldn't recommend it.
As others have mentioned, USB drives function similarly to regular hard drives when connected to a computer, but they are significantly slower. They also offer less security, making them more prone to corruption during frequent use. Under heavy workloads, USB drives often perform poorly compared to traditional hard drives or SSDs.