The significance of 'original wedt side story' is hard to define without knowing more about this 'wedt' term. But if we assume it's related to 'West Side Story' in some way, it could be important for its cultural impact. It has influenced subsequent works in theater, film, and music with its themes of young love, community divides, and the search for a better life.
Well, without more context for 'new wedt side story', it's difficult to say precisely. It could be a brand - new production in the vein of 'West Side Story' but set in a different location perhaps. Or it could be a completely different story that just has a similar - sounding name. However, if we assume it has some relation to the classic, it might also include new interpretations of the characters, like making them more complex or adding more backstories to them.
Sorry, I'm not sure about 'original wedt side story' as 'wedt' seems to be an unknown or misspelled term. If it was 'west', then 'Original West Side Story' is about two rival gangs, the Jets and the Sharks, and the love story between Tony and Maria that unfolds against the backdrop of their feud.
You might be able to catch it on cable TV channels that show classic movies. Sometimes they air West Side Story. Another option is to rent or buy a digital copy from online stores like iTunes or Google Play.