Advice for first time build with used parts for children

[hfullwood]

Hello,

I'm a complete newbie but I've been looking to buy my children a PC for school work and mild gaming (Fortnite). I've been doing some research and thought why not build one ourselves. I've searched the forum but haven't had much luck of understanding what's best.

I'm thinking roughly £500 budget, and have absolutely nothing at the moment (happy to buy a monitor in addition to the £500) and wondered if you could suggest what parts I'd be best buying? Used parts please as I'll hopefully get more for my money.

Thank you in advance for reading my message
Hayley

 

[hfullwood]

Thank you all, really helpful.

How do I know which RX 6600/xt is best? Theres a couple of used ones on ebay, one MSI Radeon 8GB for £180 from what seems like a reputable seller, or another for £100 which is an AMD Radeon 4GB.

I'm sorry for the simple questions, I'll try and do as much research so I don't bother you too much.

Thank you!
Hayley