Quick tips I haven't seen mentioned:
You can have multiple usable techs installed, but only one at a time is active. Select the active tech by clicking on it on the character screen. Morph ball tech is activated by pressing F.
Moons do seem to have greater mineral density, but they also are shallower than a normal planet so you can dig through and hit the good stuff very quickly. I spent an hour digging through bedrock fruitlessly looking for gold, then doubled my stocks in 20 minutes on a single moon.
Z switches the items in the left and right mouse button. Since you can't rebind it... take the Z key off of your keyboard to prevent dying when YOUR SHIELD IS SUDDENLY ON LMB FOR SOME FU---- *ahem*
**and some general ramblings**
I'm curious how the balancing process in beta phase 2 is going to go. Right now it looks like they're just shoveling in a bunch of stuff to see what breaks, with lots of content pushes later, which is great because that's what testing is for. There do seem to be huge power discrepancies, though.
I'm hoping the Tier 2 boss fight is a placeholder. The Tier 1 has its own movement and custom attacks, while everything on T2 is just copypasted from critters... and the numbers are ridiculously unbalanced so.... give it time, maybe?