Guys i am from india none of the star wars movies have been released here but star wars episode 7 is going to be released and i think its interesting but i don't want to download all the episodes(i.e. Movies) and watch one by one, so just suggest me few so i can understand the basics and then watch upcoming additions
There'll be many opinions regarding this, but this question basically boils down to one decision: Watch episode 1-3 or skip them.
Many people disliked episodes 1-3 simply due to a different tone and a far lighter approach (also due to Jar-Jar Binks and the predetermination of episode 3's end). The classic trilogy (now episodes 4-6) depicts a far darker setting where there's always that evil empire, just striving for dominating or defeating the rebel alliance.
In the prequels, it's far less obvious and while there are clearly bad guys, they're (at the beginning) not as evident or allmighty.
For the bare minimum, you should watch the classic trilogy (i.e. episodes 4 through 6).
If you want to see it all, watch all six episodes in numerical order.
If you'd like to include the animated series Clone Wars, then watch the first two movies, followed by the series, followed by the remaining four movies.
I've yet to see Rebels, so I'm not sure how/where to put those (probably past the other movies).
If you want to have the real Stars Wars' watching experience, then you should watch first the episodes 4 through 6. Later, when you have some time lose and you don't know what else to do, then you can watch the episodes 1 to 3.
Even if you plan to watch the full serie 1 to 6 in a single swoop, you should begin with the episode 4 to 6 first; as this in my opinion the only way to have the real experience because they have been made in that order and therefore, you will be able to see the evolution of the serie as made by the directors.
If you look first at the episodes 1 to 3, non only many surprise elements of the classic trilogy will be spoiled but chance are that you will get tired of some of its more interesting features before even beginning to watch the real deal. In short, you can consider watching these three episodes first as a long, big spoiler for the next three.
As for the animated series, watch them last, if you care.