It is confusing.

[NoNetwork]

I am just a newbie, reading articles and watching videos about bitcoin is my way to know bitcoin more. But when I got here that informations are not really enough.
What is this bitcoin unlimited? SegWit? and Lightning Network? I dont really understand. SegWit, I have heard that on one of the videos I had watched, about helping bitcoin to have good transactions. But still cant undestand it.
Can anyone explain clearly what are these terms?

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[schnötzel]

what ca we say a video or article can´t?

[Coinonat]

 Pay attention and read lots of posts here and you will understand what you needed.

[pooya87]

why do you want to know about SegWit, and BU these are advanced topics which you don't need to worry about if you are calling yourself a Newbie. try to stick to the basic information you get from bitcoin.org getting started part and try to stay away from things that are advanced right now.

as your next step, if you wanted to learn more then you can worry about these things.
for example read about SegWit here: https://bitcoincore.org/en/2016/01/26/segwit-benefits/
p.s. for this particular topic try not to watch or read all the articles, you will find out there are lots of misinformation out there. try sticking to the right sources.

[xskl0]

SegWit (Segregated Witness) and Bitcoin Unlimited are two proposals for improve the Bitcoin network solving the problem of low size of the blocks that produce slow transactions. These proposals need the support of a high average of the miners to be aplied and the miners will have to choose one of both or a third one in order to solve the problem of 1mb blocks (today is not enough). Lighning Network (it allow instaly transactions) is a project that can only be used if SegWit has been aplied before. Right now 27 % of the miners are supporting Segwit https://blockchain.info/charts/bip-9-segwit and they need 95% to be applied. Miners support SegWit when they run the Bitcoin Core program, same happen with BU when miners run his program.

[Velkro]

SegWit, I have heard that on one of the videos I had watched, about helping bitcoin to have good transactions. But still cant undestand it.
Can anyone explain clearly what are these terms?

U shouldn't care that much about this terms because in past there were colored coins hyped term and technology around bitcoin. I didn't use my time to read exactly what it is and it dissapeared as idea and as software so i would only waste my time.
If segwit won't activate, then you would waste time also learning what it is exactly.

So care mostly about most basic stuff around bitcoin, this are extensions that maybe will not be ever used in reality.

[Kemarit]

SegWit, I have heard that on one of the videos I had watched, about helping bitcoin to have good transactions. But still cant undestand it.
Can anyone explain clearly what are these terms?

U shouldn't care that much about this terms because in past there were colored coins hyped term and technology around bitcoin. I didn't use my time to read exactly what it is and it dissapeared as idea and as software so i would only waste my time.
If segwit won't activate, then you would waste time also learning what it is exactly.

So care mostly about most basic stuff around bitcoin, this are extensions that maybe will not be ever used in reality.

Use the search button and you will find a lot of topics regarding the whole BU vs Segwit
vs LN saga. But being a newbie, I suggest you don't go for more technical terms, just
stick to basic and you will be find and as you learning a lot about bitcoin then that's the
time you can learn about them. Because you might lose interest in bitcoin if you see
a lot of debates and bickering on what's best to implement regarding the bitcoin blocksize
issue. Goodluck!

[sportis]

Even though some members above have already proposed to you that there is no need to care with advanced things, and I agree with them, people sometimes do what they really want to. So if you insist there are some very interesting threads in the forum. One of them which I strongly suggest to start because summarizes many of these topics is this.

[beerlover]

I am just a newbie, reading articles and watching videos about bitcoin is my way to know bitcoin more. But when I got here that informations are not really enough.
What is this bitcoin unlimited? SegWit? and Lightning Network?

All these are NOT for beginners. Till you become an advanced user and if you have interest on learning them you can search google and find good resources on these topics.
Now I am suggesting you to learn basics of bitcoin payment system like sending receiving bitcoins and wallet types and how to protect bitcoins.