The proper way to show an external article would be by giving a short summary, or quoting a short relevant part, followed by a link for further reading. But I don't think there's much much discussion value if you create a new topic solely for an article on another website. I probably wouldn't do it myself.

If you use several different articles as reference (by copying text directly, by translating text or by paraphrasing), I think you should add a reference to each part. If you use a source many times, you can use for instance super script numbers ("^[1]") (like Wikipedia).

Harvest losses - For many crypto investors, 2018 was a tough year, so you might have had bigger capital losses than gains. This means that you can make use of this and realizing the loss of a previously gained transaction / crypto to lower your tax burden.

For example: You bought 1 Bitcoin for $ 1000 in January 2017 and then you traded the 1 BTC for 20 ETH in November 2017 when the price of 1 BTC was $ 20,000. That means you realized a capital gains event when your investment of $ 1,000 (for 1 BTC) was worth $ 20,000 (for 1 BTC). And you would have to pay tax on the gains of $ 19,000 in many countries. But if the market crashed in 2018 and those 20 ETH that you bought for 20,000 $ is now only worth 2000 $ and you then traded those for let’s say 1 Bitcoin again, then you have realized a capital loss of 18,000 $.

This might not help you when doing your taxes for 2017, but worth considering for your 2018 crypto taxes. In some (most?) Countries you can only offset capital losses against capital gains, so if you had a poor capital gains year in 2018 then it might be a good idea to check if you can carry forward your losses for the following year - 2019.

Harvest losses

For many crypto investors, 2018 was a tough year, so you might have had bigger capital losses than gains. This means that you can make use of this and realising the loss of a previously gained transaction/crypto to lower your tax burden.

To exemplify this: You bought 1 Bitcoin for 1000$ in January 2017 and then you traded the 1 BTC for 20 ETH in November 2017 when the price of 1 BTC was 20,000$.

That means you realised a capital gains event when your investment of 1000$ (for 1 BTC) was worth 20,000$ (for 1 BTC). And you would have to pay tax on the gains of 19,000$ in many countries.

But if the market crashed in 2018 and those 20 ETH that you bought for 20,000$ is now only worth 2000$ and you then traded those for let’s say 1 Bitcoin again, then you have realised a capital loss of 18,000$.

This might not help you when doing your taxes for 2017, but worth considering for your 2018 crypto taxes. In some (most?) countries you can only offset capital losses against capital gains, so if you had a poor capital gains year in 2018 then it might be a good idea to check if you can carry forward your losses for the following year – 2019.