Hi goldtide, welcome to Cardschat!
I'm not a grinder or anything; I play very recreationally, but I can give you a little advice. I can tell you that there a lot of knowledgable people here who can help give you a lot of good advice, if you're willing to take the time to listen and work on your game. Let me give you a few things to check out here:
I would suggest taking a look at our Strategy Articles
. There's a lot of great info there, and most of it is geared toward a somewhat beginning player such as yourself. The Golden Archives (http://www.cardschat.com/f49/) is another great section to look at. A lot of our best strategy threads and discussions are stored here. We even have some members available for coaching (http://www.cardschat.com/f57/coaches-check-here-if-you-need-187232/?highlight=Coaching+thread) as well.
If you want to post hands for analysis, we have sub forums for that in both the Cash Games and Tournaments sections, depending on what type of hand you want analyzed or have a question about. Be sure to read the stickies in those sections to know how to properly title and post your hand (be sure to use our hand converter (http://www.cardschat.com/hand/) to make it easier for readers to review your hand).
Take a look around, and don't be afraid to jump in and ask questions in threads, or join in the discussions. I think you'll find that for the most part, Cardschat members are very helpful.
As far as cash games vs. tournaments, in most people's opinions it's best to pick one that you feel you excel at and work on that. You'll find of course that there are very different strategies to both.
Oh, and remember that as a new member, you have a daily post limit of 7 posts per day until you reach 65 posts, so make sure you use them wisely! If I think of anything else, I'll post more, but that should at least help get you started.