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...
Don't specialise. Upgrade all of your skills as you play.
Gold hangs around for a long time so don't chase it until you've cleared a screen.
Smash stuff that looks smashable, but be ready for monsters to jump out at you.