Potential Splits
Dealer's upcard
Your cards 23456789TA
(2, 2) ppppppnnnn
(3, 3) ppppppnnnn
(4, 4) nnnppnnnnn
(5, 5) nnnnnnnnnn
(6, 6) pppppnnnnn
(7, 7) ppppppnnnn
(8, 8) pppppppppp
(9, 9) pppppnppnn
(T, T) nnnnnnnnnn
(A, A) pppppppppp

Soft Hands
Dealer's upcard
Your cards 23456789TA
(A, 2) hhhDDhhhhh
(A,3) hhhDDhhhhh
(A,4) hhDDDhhhhh
(A,5) hhDDDhhhhh
(A,6) hDDDDhhhhh
(A,7) DDDDDsshhh
(A,8) ssssDsssss
(A,9) ssssssssss

Hard Totals
Dealer's upcard
Your Total 23456789TA
8 hhhhhhhhhh
9 hDDDDhhhhh
10 DDDDDDDDhh
11 DDDDDDDDDh
12 hhssshhhhh
13 ssssshhhhh
14 ssssshhhhh
15 ssssshhhhh
16 ssssshhhhh
17 ssssssssss

4d h17 DAS

This is the blackjack basic strategy table for the following rules: 4 or more decks, dealer hits on soft 17, doubling after splits is allowed. It is very similar to the default strategy where the dealer stands on soft 17.
[pdf | b&w pdf]

To use the tables,

first consider whether your hand consists of two hands of the same rank. If so consult the "Potential Splits" table -- "p" means you should split, "n" means you should consult the other tables. If one of your hands is an ace look at the "Soft Hands" table, otherwise go by the "Hard Totals" table. And of course, for non-split hard hands, you should always stand if your total is 18 or above and hit if your total is less than 8.

More on Basic Strategy