HIVE Blockchain NOOB

Hello guys,

I'm Hitmi, I'm new to the forum (if that's what is called) I've been playing Splinterlands for 3 months now. However, I never visited this forum. I have some questions about HIVE HBD and HP.

1. What is the best way to invest into HIVE blockchain, do I keep my investment into HIVE saving or converted for HBD or HP saving?
2. Can I be a node validator for HIVE?
3. Finally how exactly do you earn HIVE by posing? Do I have to post daily? do I earn if I reply/comment on posts?

Thanks in advance for anyone answering if any :D
Hitmi