Star Man,
There's a busload of threads on this board answering all your questions. I recommend you always run a search before asking a question. I usually run a Google site: keyword search before posting a question (though I actually don't post questions all that often, if ever

).
I'd also recommend Bill's SE chat. If I'm conscious on Wednesdays around 11PM EST I'm always there.
As for keyword metas, don't bother with them on free sites, especially if you don't know how to use it. If you use the wrong keywords in that meta, you'll lower your own ranking.
Your TGP is way too ad-intensive.
As for number of recips, all I know is if you use 20, stu will reject you on every LL she reviews for
I would steer away from free content provided by big sponsors like TCG.
Autosubmitters -- If you don't know anything about them, don't use it. If you're building free sites, don't use them, period.
Spamming - think of free sites and galleries as a legit spamming tactic and build one every day.