Dell laptop XPS 15 9510 advice pleae.

Wow I am so appreciative of your comments.
I have to be honest I have almost been in tears with this machine.
My daughter as Big suggested said use a mouse and bought one for me and it was delivered yesterday.
I can't believe the difference it as made, I can actually copy and paste and the screen doesn't change in size, what a nightmare that is.
Blossom thank you for the Chrome tutorial, the young man is about organization which is exactually what I want, I am very organized myself.
I've worked out how to use bookmarks and mange them, so pleased about that.
Also spell checker works with the mouse.
Daughter sent me a Youtube for window 11 tutorial.

Minimoon the website your link went to asked me for my credit card details and a payment of £24.99 a month, so not sure what that is about.

I rang Dell they said they didn't have a user manual only service manuals.
Anyhow thanks again everyone for helping me you are a great group of people on this site.

Firefox should work with windows 11 which is probably the version you have. Try uninstalling and installing again. It is not Dell user manual that you want but a firfox or chrome user manual.
I use several different web browsers to prevent web sites knowing every web site that I go to.

There are several Chrome user tutorials on YouTube, such as this one.

youtu.be/3tvGp_X-2Ek

Do you know what operating system your laptop has? If it’s Windows it has built in tutorials that should help.

I have a new Dell Inspiron 15 3000 and some of the same problems. The keyboard is very sensitive and as you say the cursor jumps about and the page size alters. For that bit I think you get used to the sensitivity. I use the touch pad but may have to go to a mouse in order to cope with this. As for manuals they seem to be only on line now. My husband set me up with EDGE browser but I am finding that CHROME is better.

www.manualslib.com/d/dell+laptop+xps+15+9510.html

This is the site I use when looking for a user manual. Hope it helps.