re: Poker & Poker Cash Giveaway tournies
I don't know if there are any "tips". It's a big tournament, the prize pool runs deep so only the very top few earn anything worth bragging about.
I play them because it's good practise, with a bigger prize pool than the crappy $10 or $20 freerolls
PS PokerCash giveaways run 4x daily, I think. The first one is an all-in heads up so it's just a lottery. The rest are hyperturbo or zoom so they go quick but will still take a couple of hours if you get to the final table.
You can pick up extra tickets with the monthly bonus code for free, which is cool too. And completing daily challenges will get you all the free tickets you could ever want at little risk to your bankroll.