This is building off the information in the first solution - read that for background and general rules, or reference this website:
http://xbox360.ign.com/articles/111/1119257p1.htmlAs for strategy to win 30 games, I did it against the first three players I ran into - Goodsprings, Primm, and Mojave Outpost. My strategy kills all three of those players, and I've won 40 matches in a row and over 2,500 caps... so it should be really easy to copy or modify.
1. First, you only need to create one hand from the default deck to beat the early chumps. Once you pick the hand, you can use it in every match after that, so it takes a few minutes and you never have to do it again. Create your hand (30 cards) with all 4 suits, all 5-6-7-8 and J-Q-K, 4 each of all those cards... that's 28 cards, then 2 Jokers.
2. When you start, the first hand you're just laying down three cards as the basis of your caravans. Use the highest or lowest cards of different suits... like 5 of Clubs, 8 of spades, 8 of hearts, for example. If you don't have three number cards, discard a Queen, they're next to useless.
3. Once the three caravans are started, if you have a King, play it on the highest card you have - an 8, usually. That doubles the 8, giving you 16. You're aiming for 26 total in every caravan.
4. If the other player gets between 20-26 before you do in any caravan, play the King on their highest card, that'll make them bust (until they use a Jack to get rid of a card). Sometimes they get frustrated and fold that entire caravan, which is awesome. Basically, don't let the other player win a single caravan, and you'll be okay.
5. If the other player plays a King on one of his cards, they'll probably be close to that 20-26 range, so play a Jack on that card - removing that card and the King, dropping him back down to some low #.
6. Your goal is to have all three Caravans between 21-26, and with a higher # in that range than the other player. Once you do that, you win the game.
It's actually pretty easy if you follow that method - I won over 40 in a row. Remember, though, if you get stuck and can't play one of your numerical cards, use a Queen to reverse the order. Also, be careful with Jokers so that you don't sabotage your Caravans or drop down the other player's point # below the busting point (27).