Mole grips and half a scissor maybe not needed, it depends on whether you need to change the hard drive then they could useful. Bottle of beer would, however, definitely be useful;
You would go far wrong to start here:
https://lubuntu.net/
If you have done anything like it before then do that again.
If not - After download, make an ISO disc and use that to boot the machine. If it won't take a disc then you can make a bootable USB stick, but it is a tad more complicated and needs another utility to be downloaded and used to prep the drive.