All good advice and I don't mean to discourage you in anyway actually trying to encourage when I tell you it took me 2 years till I found my first double die! That was the rough part-the good news is I found 5 or 6 good ones in about a 3 month period at that point-the best part is during that 2 years of searching hard and asking questions I wound up memorizing so many years and specific double dies that things got much faster and easier and along the way I learned about a ton of new errors and varieties so none of that time was a waste-I found a ton of other errors during that period,got my coins listed on 2 different sites and also have an article about 2 of my recent finds coming out in next months coin world-keep at it! Good luck!