Getting Back Into Game After Long Time Out

I am a Brand New Pokemon TCG player. I have played all of the Games (Not much Black/White & Black 2/White2) I have collected cards since I was young, and stopped a few years ago. I made a deck and most of the Pokemon aren't from the same set (If that matters for playing).

The cards I chose were due to limited supply on hand and thinking. I know a few basics on making Decks, but it's very limited. I have 60 Cards with 21 Pokemon, 18 Energy, and 22 Trainer/Support.
My Deck
1 Blaziken
2 Combusken
2 Torchic
2 Sceptile
2 Grovyle
4 Treeko
1 Meganium
2 Bayleef
4 Chikorita

8 Fire Energy
10 Grass Energy

3 Potion
3 Copycat
3 Energy Search
4 Bills Maintenance
2 Prof. Oak Research
3 Switch
2 Master Ball
2 Poke Ball

If I were you, I'd check the thread I've linked to in the line below this to review some basics. Many of the Pokemon don't seem to go together very well, which is something I can tell before I even know the sets they're from.

Basics of deckbuilding: http://www.pokecommunity.com/showthread.php?t=275378