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Yes, its a bit overwhelming at first. My advice is take it slow. Seriously, Your bikes imho is one of the greatest road bikes ever made and don't let anyone tell you otherwise. Mine is a 31 special clubman with selbach and Brampton special fittings.
Do not throw anything away! When you...
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You will find a number sequence under the bb. If the bike is to be resprayed then lightly sand and you will see at 6oclock the small numbers which will at least determine the year - I missed these for a while. Also if you have the full bike the bike parts and fittings will tell you the model.