I would like to give my old iPad to my grandchild but want to restore it to original settings.

See >>> What to do before you sell, give away or trade in your iPhone, iPad or iPod touch – Apple Support

Depending on how old this iPad is, it may no longer be useful to anyone.

If this iPad is an 8-10-year old iPad 2, 3, 4 or 1st gen iPad Mini,

Your nearly 8-1/2-year old, iPad 4th gen model is too old, now.

Apple ended support for all 8-10-year old iOS devices well over 4 years, ago, in 2016.

Third party app developers abandoned and stopped supporting these 8-10-year old iOS devices nearly 3 years, ago, in 2018.

There are, virtually, NO MORE third party apps available from the iOS App Store, any longer!

None!

AND, that over 4-year old default iOS Safari Web browser is too old, not secure and not safe to use to access the Internet, any longer.

There are virtually NO MORE third party Web browsers left for 8-10 year old iPads!

Available and more popular third party Web browser choices are pretty much GONE, now.

If you must use these old iPad models, here is what is left for still updated Web browsers.

Pickins’ are slim, now!

ALook Web browser ( A fairly new Web browser primarily designed for old iOS device versions, but is still available to newer iOS/iPadOS devices, as well )

Dolphin Web browser

Maxthon Web browser

TOR private browser

TOR + VPN private browser

Turbo VPN private browser

This is pretty much it for iOS 9/10 compatible, third party Web browsers today.

Simply put, these 8-10-year old iPad models are too old and obsolete now.

Sorry, but this is the reality for ALL 8-10-year old AND OLDER iOS devices now. Especially going into 2021!

If setting up such old iPads from scratch, the effort will render these old iPads virtually useless.

Sorry.