Pages, Text Editor, and Safari Help Needed Please...

Hi everyone, I'm Heidi. I am new to learning my Mac. I got the basics of getting around no problem but I am experiencing a bit of issues with Pages, Text Edit, and Safari... I am hoping some of you members can shed some light. Any help is greatly appreciated.

So I am wondering if there are any great in depth tutorials for the above apps mentioned. I really need to learn more than just the basics. I have searched everywhere for tutorials for the High Sierra OS versions but I can't seem to come across anything. There must be some out there.

Any resources would be quite helpful :)
Thanks.