Finally got back to my computer. Okay, in addition to the Big Blue deck, my other simple deck is a Pure Burn (all red, no creatures, only direct damage and some Howling Mines and Browbeats). Then I've got a green Elf deck (that's a classic archetype because it's the single best way to produce the most mana the fastest, aside from infinite combos; the same infrastructure can be used for either an Elf deck or a Eldrazi deck). My fastest but more fragile deck is blue/green Unblockable Poison. I've got a white healing deck which isn't very effective, though it can win certain matchups. And the last functional deck is Black Annoyance (small creatures, removal, and enchantments that all damage the opponent for one or two points each). Then in a currenly nonfunctional state I have a Sacred Mesa pegasus token deck, a landless Dingus deck aka Eight Armageddons, and a white/artifact Kemba deck.
Among my friends some different deck archetypes can be seen: a Mill deck, a Discard deck, a Sligh/Red Deck Wins, a White Weenie, a green token deck (squirrels and wolves), a Relentless Rats deck, a Sliver deck (the most popular tribe other than elves and maybe vampires), a black poison deck (slower and sturdier than my poison deck), a Big Red (dragons), a classic blue/white Control (counterspells plus removal and board-sweepers).
If you want to read about MTG strategy, try this article, it talks about clock position which is a really important concept in MTG strategy. http://www.mtgfanatic.com/Articles/ViewArticle.aspx?ID=168632