Welcome, Jotace! You may find Ray Franz's book "Crisis of Conscience" helpful to understand some of the goings on within the WTS and the Governing Body. Randy Watters' book "Thus Saith Jehovah's Witnesses" comes highly recommended as well.
This forum is open to anyone who wishes to participate. It is primarily for those who have been affected by the Watchtower Bible and Tract Society and their members known as "Jehovah's Witnesses". There are many different people on this board from different parts of the world. We are a varied group, some are 'in', others fading, others 'kicked to the curb', and others 'affected' since friends and/or family are 'in'. I personally am not a JW but my father is. My parents tried to raise us children in 'the truth' but as we got older, we saw the flaws they could not (or were in denial about). Let's see if I can answer your questions... and anyone else, feel free to jump in and add to, or correct me if I am in error:
1) Whats that story about year 1935 and the 144.000 ones? I dont remember that in my young days!
I was unaware of the 1935 date until this last couple of years when I started researching the WTS/JWs. Apparently, previous teachings stated that heaven's gates were closed in 1935. In other words, all of the annointed (aka 144,000) had been 'chosen' by that date. The WTS has since 'revised' this since people keep partaking at the Memorial Services and lately, despite their repeated encouragement for all to have 'an earthly hope, the numbers have been increasing. This directly conflicts with one of their reasonings for the coming of Armaggedon. In addition, it is understood that the members of the Governing Body are of the 'annointed'. See... Armageddon didn't come. This has messed up a lot of the chronology.
2) What's the new theory about the "1914 generation"?
a) 1985 Generation: Those who saw events of 1914 would be living when Armageddon came . "Thus before the 1914 generation completely dies out, God's judgment must be executed." (The Watchtower May 1, 1985, page 4)
b) 1995 Generation: People who fail to mend their ways . "Therefore, in the final fulfillment of Jesus' prophecy today, "this generation" apparently refers to the peoples of earth who see the sign of Christ's presence but fail to mend their ways."(November 1, 1995 Watchtower)
c) 2008 Generation: Anointed. "those anointed comprise the present "generation" of contemporaries who won't pass away "until all the things come to pass".(Watchtower February 15 2008 - page 24 paragraph 15)
3) I think the sheeps/goats/Great Tribulation is still the same.
4) Regarding blood, it wasn't a sin to begin with before the Fred Franz days. As a child, for me, all blood was a sin so you couldn't even take your own. Now, they allow 'fractions' -- which totally amazed me. To summarize the WTS Blood Policy: Yes/No/Maybe
5) Is it true that the Watchtower Society deliberately hides child abuse cases among them, not denouncing them to authorities?
The answer is 'Yes'. Their overall policy is "Do Nothing To Shed a Bad Light on Jehovah". They only do what is required by law and they don't go beyond that. If there is no legal requirement, they don't go to the authorities. And as a victim, unless it is by law, a JW cannot go to the authorities either. My father's previous congregation had a pedophile among them... and they did nothing about him.
6) And what about the U.N. case? What happened really?
They were discovered as having a Non-Govermental Organization (NGO) membership with the United Nations spanning a 10 year period from 1991 to 2001. They said they cancelled their membership but there is evidence surfacing recently to show that they are still involved. The WTS goes by many different names including different iterations of the name Watchtower (eg. The Watch Tower, The Watchtower, The Watchtower Society, The Watchtower Bible and Tract Society, etc., etc., etc.) Check this thread out for more on some of the current goings on: http://www.jehovahs-witness.net/jw/friends/176262/1/BREAKING-NEWS-WATCHTOWER-IS-STILL-A-MEMBER-OF-UN-SOURCE-SAYS
I hope this helps a bit.