After all these years, and growing up with Windows 3.1, I have seen an entire evolution of computers and software. Touch screens and large resolutions were a pipe dream just 15 years ago. Now it's the norm. Going from a Packard Bell (yes, before HP) that couldn't run 3D Ultra Mini...
Most things only harm Pancho's balloons, so don't be scared to let him take a few hits.
Some advanced levels require seesaw physics, so remove the bits of wood that don't fit such a mechanism.
You can win a level on just one balloon.