Card composition strategy
Hit X33 at your peril as you will lose the 0.0005 extra gain of standing! (Table 8, Theory of Gambling & statistical logic.
If you're a newbie, I wouldn't worry about 3+card composition single deck strategy considering the above. Note too this is for considering your three cards against a dealers card, on the assumption that no other cards have been dealt from a single deck. Under these circumstances it is precise, otherwise you're best indicator. You should only worry about card composition strategy if you are flat betting a tiny grind from a las vegas strip single deck game or doing t/o on shuffle every hand for lucrative comps.
If you're a newbie & working off a multi deck strategy, then you will have to adjust this for single deck. ie
Stand soft 18vA
Split 6,6 v2 & 2,2,v3
double 11 vA
Two card composition strategies:
Stand 7,7 v 10
Hit T,3 v 2
Hit T,2 v3 if dealer stands soft 17
Ht T,2 v4
Hit T,2 v6
(as per table Theory of BJ, Griffin)
If it's more than just one round, head on play with the dealer then the other players cards & cards from previous rounds are equally important to consider.
In answer to your qu. Epstein advises
"Against a Ten, draw with two-card 16's; draw with three-and four-card 16's that include two Sixes or one Six with a Seven, Eight or Nine, or holding 2,2,2,10; otherwise, stand."
He further advises "Complete analyses of all multiple-card hands are contrary to the law of diminishing returns, since some hundereds of thousands of such hands exist"
Too many counters get wrapped up in the crazy detail of squeezing an extra tenth (at best) of a percent. Common sense should tell you that you can achieve a higher profit by dedicating an extra 10 or 20 minutes a week to playing.
I strongly recommend you buy Theory of BJ, if only for the table that allows you to work out basic strategy for any no.of decks & most common rules. And of course Wong's Pro BJ is the best book for one level counting with complete indexes for strategy variation according to the count. For inspiration, read Uston. (anything)