New NG Force--Looking for advice

I just started on New Genesis 2 days ago. I'm level 11 and currently a Force/Tech. How do I level up spells? Are there more spells available from the ones Force start with? I got a 3* Rod and should I upgrade that?

you can't upgrade techs or PAs and we don't know if is gonna be possible or not in the future so you gonna have to use the 6 techs you have access for now, the rod is better upgrade it the 4 star is kind of hard to drop and if you want to access the higher difficulty places that are in the moment you need 1184 BP