Yes, you should take the available updates.
Even if your computer shipped from the factory with AU (v1607), it will still need updates.
(Let us know if you need help checking your Win10 version or see here.)
These are important for stability, performance and security (including for embedded browser plug-ins, such as Adobe Flash Player).
They are not delivered as 10, 15 or 20 individual patches any longer.
They come as "Rollups" every month, as part of the "Windows as a Service" model.
In Pro and higher, you *can* temporarily defer major UPGRADES to the OS (via GP edit or reg edit), but it's not a good idea to disable Windows Updates entirely.
I do not particularly like the degraded end user control over Windows Updates, but they have moved to the same model even for 7/8.1. So, there's not much we can do about it.
The major decisions on a new Win10 computer:
- Local account vs. MS account (or both) -- see here
- Cortana enabled or disabled -- see here
- Edge for default browsing or not
- Windows store or not (you need a MS account for these)
- Other Win10 default apps vs. your own preferred desktop apps for everything from browsers to email clients to photo editing, etc.
- Whether to live with the native Win10 Start Menu, File Explorer and Search, or whether to install Classic Shell and other 3rd-party apps to make it look/feel more like Win7
- If you kill most/all of the live tiles in the Start Menu and correctly set your default programs, the Win10 Start Menu is not all that awful
- Whether to use the native Win10 Firewall and Windows Defender, or to switch to 3rd-party security applications
There are many helpful tutorials available here and at other fora.
Just take it slow and make notes of your changes as you go.
Do not change too many things at one time.
And make frequent system images to a USB external HDD, so that you can go back, if needed.
I researched Win10 for almost a year before taking the plunge on a new OEM Windows 10 system. I was glad I waited and took the time. But I still had many questions about it, once I got it in my hands.
Despite claims to the contrary -- mostly from folks who are still running XP and older versions of Windows -- using it is not nearly as terrible as one might think.
I have enjoyed robust performance from it, along with MS Office 2016 and updated versions of my favorite productivity applications.
There will be further refinements and improvements, including to the privacy features.
I hope this helps,