I use this function
getList[name_String] := Module[{options, idx}, options = Names[name <> "`*"];
options = ToExpression /@ options;
options = {#, Options[#]} & /@ options;
idx = Range[Length[options]];
options = {#[[1]], TableForm[#[[2]]]} & /@ options;
options = Insert[options[[#]], #, 1] & /@ idx;
options = Insert[options, {"#", "Option", "Options to this option"}, 1];
Grid[options, Frame -> All, Alignment -> Left, FrameStyle ->
Directive[Thickness[.005], Gray]]];
To use:
getList["NIntegrate"]
I modified the above a bit based on function I think I got from one of the Mathematica Guide books but I do not remember now which book it was. The methods can be seen under the third column there by looking for Method->
there. At least this is much easier than having to scan pages and pages of help looking for these things.
Replace the name of the command above to get other functions.