Couldn't agree more on the manual tools and the practice to learn to use them safely and efficiently.
Hand saws, learn the difference between a rip saw and a crosscut, makes work effort more efficient using the correct tool. Spend the time on scrap wood to acquire muscle memory and hand eye co-ordination to make a smooth perpedicular cut following a pencil or scribe line. Get layout tools, squares or various types and sizes. Learn how to check them for alignment.
Learn how to use hand planes, from razor sharp blades and how to adjust for squareness and depth of cut, A badly adjusted plane rips chunks of wood and work becomes frustrating in addition to material loss. Different wood characteristics require modifying cuts. Again, practice.
Sharpening tools...learning to file hand saw teeth and setting them correctly can make the difference in butter smooth effort with total control and a struggle with blade binding and jumping. Worst cut I ever inflicted on myself was using a neighbors saw to help him because it seemed to be quicker to use his than walk home and get mine. Blade hit a hidden small knot, jumped and tore my holding hand thumb at the root knuckle down to the bone. You can injure yourself just as bad as with a power tool
NEVER lend out your tools...that's NEVER EVER. If a neighbor or friend hasn't the tool chances are he doesn't know how to use it or care for it. Only exceptions are wrenches. Can't do too much damage if you get them back. Do offer teaching assist though.
I've reached the point where I hate the sound of power tools and now use them only for must do now work. Using the hand tools is more satisfying and very near as quick as dragging a power tool out, setting blade depth, checking blade alignment and setting the tool down in safe spot. 90% of drilling jobs get done with a hand drill that's 80 plus years old that weighs a bit more than a pound.
my two cents. ;>)