QuotaRelief: I also recently joined a CC, and have learned to use my free pass to contribute to CC points, turf wars, etc. However even though I can see I'm now in the top 50 of contribution points to my CC, I don't even really understand what benefit it is to be in a CC.
XPs help you to climb the levels (you're at L60) and get more equipment available (and spend more money for the benefit of our host). On mobile, climbing the levels will also promote your tier (you're a Tour Pro now). Next step is Master, which will result in more difficulties in playing.
BTW: You'd find plenty of advice here to make useful equipment choices...
With CC passes, XPs help the CC to rise in levels. Generally speaking, the CC gets the same amount as you. The benefits of the levels are listed in the CC section somewhere, but many of them aren't too valuable, and I can tell you that your L9 CC has all the important bits available. Thus, there's no real need to maximise. Also take my two Pfennig that there's NEVER a need to buy a CC pass!
Besides the coins matches, you may play strokeplay up to 18 holes when chosing a course first from the left menu, and you may invite WGT friends (on mobile) to join you. That may be good fun, with the built-in chat or an additional voice communication program like Skype or TeamSpeak (dunno if that works on mobile).
QuotaRelief: I'm sure I could go on and on about things I don't understand about the game. Perhaps there is a pretty simple primar that I haven't seen and should read?
The FAQs are here =>
Also, come back to ask us if you didn't succeed in the search =>
Hope you make friends (e.g. in your CC) and have a lot of fun!