What advantages and disadvantages will I encounter if I use Nested SegWit?
What advantages and disadvantages will I encounter if I use Native SegWit?
You basically gain no advantage on using Nested SegWit today.
Its main purpose is to aid the adaption of SegWit without breaking compatibility with most clients which isn't much of an issue today.
I'm not talking about theory, I'm talking about reality.
Wallets, shipping and receiving of satoshis, etc
I'm inexperienced and I think the best thing for me is Nested SegWit.
You should switch to Native SegWit for lesser absolute fee because the major disadvantage of "
not supported by others" was a thing of the past now.
Today, I rarely see any services or wallets that can't send to 'bc1q' addresses; if there is, it should be avoided for being 5-years outdated.
That's still subjected to the services that you're using though.
Additionally, since you're a newbie, you're not prone to sending Altcoins to a Native SegWit address compared to a Nested SegWit.
Since the latter may still be supported by some Altcoin clients or exchange, the former is Bitcoin-exclusive.