newtoarchery, great responses from the forum. i might add that if you are not currently actively shooting at a local range, either indoor spots or outdoor spots/3d you should start. there is no substitute for experience. get out there and shoot. the reply above said to get bernies book, i agree....but, if you are not having form problems or any forms of target panic, you might after reading bernies book there is a lot of good info in his book, but pairing up at a local shoot with a more experienced shooter will also eleminate some of the learning curve. i know shooting locally sometimes limits your knowledge to the best local shooter, but some of those folks are very good shooters and do travel around to some of the national level shoots.

get out there and work hard, and as nimrod bow stated, work just as hard with your yardage estimation as you do your shooting form. if you dont know how far it is, you really are at a disadvantage.

i too use a rangefinder, but i use a little different approach. i judge the yardage to the target, set my sight and shoot. after the shot i range the target and write both the guess and actual yardage down. at the end of the shoot i can establish a baseline for me by comparing the two. i found i underjudged 65% of the targets by 2 yards beyond 32 yards. i was able to adjust my estimating skills by making sure i could find a good solid 20 or 30 yard mark to work with. i do use the terrain and anything else to find my way out to the target, and then find my yardage back from the target.