Shouldn't be concerned with upgrades or bling until you have control of the heli; can put it where you want it, when you want it.
It's just more expensive crashes with the bling.
Learning what to adjust and how to do it is more important when learning.
RADDs has a good training syllabus..
http://www.dream-models.com/eco/index.html

www.bladecprepair.com is a common sense site, with a ton of useable information.