Welcome 4ringo. Always good to have new members on the forum.
By the sounds of your first post you’re a fan of many years who is rediscovering old favourites. I was in your position a little while ago and have certainly found this site invaluable. My advice on the best place to start is to check out our Top 20 list. Here’s the link:
All of the best films are here (although everyone has their own tastes of course) and most of these are available in some form or other in an english language version (audio or subtitled). Info on DVD releases can be found on each film’s relevant page. I’m afraid that being a spaghetti fan means buying from all over the world these days but actually this becomes part of the fun. For the harder to find films there are a number of DVD-R versions kicking around and as a general rule you will usually find fans are always willing to trade films they have which do not have official releases.
Lastly, if there is a particular title you have trouble getting, or a film whose title escapes your memory, just ask on the forum. That’s what it’s for.