Potential Splits
	Dealer's upcard
Your cards	2	3	4	5	6	7	8	9	T	A
(2, 2)	p	p	p	p	p	p	n	n	n	n
(3, 3)	p	p	p	p	p	p	n	n	n	n
(4, 4)	n	n	n	p	p	n	n	n	n	n
(5, 5)	n	n	n	n	n	n	n	n	n	n
(6, 6)	p	p	p	p	p	n	n	n	n	n
(7, 7)	p	p	p	p	p	p	n	n	n	n
(8, 8)	p	p	p	p	p	p	p	p	p	p
(9, 9)	p	p	p	p	p	n	p	p	n	n
(T, T)	n	n	n	n	n	n	n	n	n	n
(A, A)	p	p	p	p	p	p	p	p	p	p

Soft Hands
	Dealer's upcard
Your cards	2	3	4	5	6	7	8	9	T	A
(A, 2)	h	h	h	D	D	h	h	h	h	h
(A,3)	h	h	h	D	D	h	h	h	h	h
(A,4)	h	h	D	D	D	h	h	h	h	h
(A,5)	h	h	D	D	D	h	h	h	h	h
(A,6)	h	D	D	D	D	h	h	h	h	h
(A,7)	s	D	D	D	D	s	s	h	h	h
(A,8)	s	s	s	s	s	s	s	s	s	s
(A,9)	s	s	s	s	s	s	s	s	s	s

Hard Totals
	Dealer's upcard
Your Total	2	3	4	5	6	7	8	9	T	A
8	h	h	h	h	h	h	h	h	h	h
9	h	D	D	D	D	h	h	h	h	h
10	D	D	D	D	D	D	D	D	h	h
11	D	D	D	D	D	D	D	D	D	h
12	h	h	s	s	s	h	h	h	h	h
13	s	s	s	s	s	h	h	h	h	h
14	s	s	s	s	s	h	h	h	h	h
15	s	s	s	s	s	h	h	h	h	h
16	s	s	s	s	s	h	h	h	h	h
17	s	s	s	s	s	s	s	s	s	s

4d s17 DAS

This is the default strategy and is appropriate for 4 or more decks, when the dealer stands on soft 17 and doubling after splits is allowed. This is a very common set of rules and this strategy is probably the most useful one to learn.
[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.