Magic is a widely popular game world wide. Congratulations on your choice to indulge yourself in a great game.
The game has been around since 1993 and is still popular. It was the first ever Collectible Card Game. Now, there are many thousands of cards available, and hundreds of thousands of players world wide. The appeal is to people young and old.
The community where I play has players' ages ranging from pre-teen to mid-fifties. So, you are in great company.
If you would like to learn more about the game, you can go to the websites I have listed below. With a new set coming out every few months, there is plenty of excitement and an ever-changing strategies that come with the game.
For outsiders, I like to sum up the game by letting them know that it combines the strategies and skills of poker and chess with a fantasy theme.
As for your decks, there are no bad color combinations in the game. Make the best deck out of the cards you have and try to get better cards to eventually make your deck better.
Remember to have fun while you play, and keep it up.
Here are the websites I promised:
Magic the gathering home page-(Wizards of the Coast)
www.magicthegathering.com
Gatherer-listing and current wording of all cards. Sortable database with search engine
ww2.wizards.com/gatherer
Star City Games-Website with product for sale, articles about the game, strategies, and deck ideas-
www.starcitygames.com
Trading Card Game Player. Another website with product, articles, strategy and decks-
magic.tcgplayer.com
MTG Salvation. Articles and Forums dedicated to Magic. Also, it is the place to go for spoiler lists when new sets are approaching.-
mtgsalvation.com
The Mana Drain. Forum based website that provides deck ideas and development for all formats, with emphasis on Type 1, which uses all of the older and expensive cards-
www.themanadrain.com
The Source. The best Forum based website for the Legacy format. Legacy is a format that utilizes some of the older cards, but not the super expensive ones.
www.mtgthesource.com
I hope all of that helped. Good luck, and enjoy the game.