Question on tandem flies

[polis84]

So as some of you know I am very new to the fly fishing scene and hopefully I could get some questions answered about nymph fishing with more than one fly. I have noticed that there are many different ways to fish with tandem flies, but I am in the dark as to how to tie them together. I know the simple way of tying the second to the bend of the hook on the first, but have read that that way might not be as effective as others. Any pointers would be great. Just trying to get the best presentation possible for here on the provo. Details are appreciated as I dont know all the lingo yet. Thanks
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