Hey HILT, welcome to the forums.
You don't have to be an expert to join discussions, or do anything to complete missions; treat Bitcointalk as a another forum.
However there are some twists:
1) Ranking up is powered by Merits (points given by other members for constructive/ helpful/ entertaining posts) and Activity (how long you actively spend on the forum). Without either, your rank will stay at where it is.
2) Zero tolerance on plagiarism. Any information like an article should be accompanied by the source. Once you're banned, you are blacklisted from the forum forever.
3) You might come across signature campaigns or bounty campaigns which require you to post or complete certain actions. Signature campaigns require members of higher rank and with a good posting history so begging or spamming your way will not work.
4) Posting referral links are not allowed.
5) When in doubt, you can ask a mod or the community. We'd be ready to help
There are way more rules
here but feel free to go through them if you have the time.
In the meanwhile, just enjoy your stay