help with a cheap gaming build for my son

hi all, complete newbie to upgrading pc’s.. I have a PC I bought around 5 yrs ago.. never really used it, but now I fancy getting back into things.. I have no idea whether to scrap it and start a fresh or whether i can get away by adding a few parts cheaply.. any help would be greatly...

My 13 year old son wants a "gaming" pc for his birthday. It is going to be father/son build it together thing. Got to be kinda cheap at around £500-600. We just need the tower and everything inside at the moment. I have access to a copy of windows. I have built a couple in the past but have...