As a newbie, you're expected to start learning from two aspects, the first is about the forum while the second is about bitcoin which is the main purpose for the creation of this platform, there are threads already created to serve as guide to newbies towards having a successful experience being on this forum and you can begin with these.

Unofficial list of (official) Bitcointalk.org rules, guidelines, FAQ
https://bitcointalk.org/index.php?topic=703657.0

posting etiquettes
https://bitcointalk.org/index.php?topic=5184741.0#post_altgiveaway

everything you need to know about forum rank, activities and merits.
https://bitcointalk.org/index.php?topic=2766177.0

You can as well make use of the forum search engine in looking for other related aspect that might be of interest to you.

Welcome to Bitcointalk.