Replaced an old 320GB hard drive with 1TB.
Fixed a scratchy, staticky, intermittent audio jack.
Replaced a smashed front glass...... damned cat.
This is an iMac 24 inch, so there were no specific instructions. The "How-To" guides for the other models of iMacs, available on the iFixit site, were close enough to get me there. (Been doing this kinda stuff since 1962.)
You cannot strike a match on a damp cake of soap.