Now, the original Adams fly design was different than the one we've all come to know as the classic today (another post later on the original Adams fly in the near future), but it has gone through many alterations over the decades. In fact, there are many different versions of the Adams in books & for sale these days. Go ahead & try them all, but for me, you really can't beat the original.
As there are many different ways to tie an Adams, it helps to know the basic way to tie one up before you go about trying to alter the pattern. The videos below is a really good demonstration of how to tie the traditional Adams dry fly. Plus, it's got some really good, practical tips that show you some really good ideas on how to tie it better & with more ease.
Anytime of year, & on any trout stream where the trout are either feeding on top or you want to search with a dry fly, it's hard to beat an Adams. Tying one of them on is never a bad decision.
Here, then, is a really good video on how to tie the Adams: