I'm not a big fan of TCG, but I love the hollows. One time, in preschool, I had a holographic Lugia but I traded it for a Nidoking. 2 years later, I was at a card store and this guy offered me a holographic Lugia(apparently for no reason) for just a pack of cards! I refused, and I regret it to this day.
Prereleases are great! You get 8 new packs from the new set weeks before its released, trade with a bunch of people, and have a day full of tcg gameplay with mock decks from your pack openings, and a free deck box and prerelease card!
I have Gold, Silver(lost), Yellow, Emerald, Ruby(lost), Sapphire(lost), Fire Red(lost), Leaf Green (Lost), Diamond, Pearl, Platinum, HG/SS(really glitched condition), and Black.
Yup I'm on the gym, but i've traded more here! We tried and never came to an agreement i think lol!! as for grading, go to psagrade.com and create an account and go from there bud, i've never gotten cards graded but i know it really adds to the value of your cards!