you dont need to worry
go to tablet mode settings as i suggested and tell it not to start in tablet mode ever! it will listen, i did it on mine with no problems and have had no trouble.
as Mono says, many of us got used to Win 10 ages ago. it is a great design one you get used to it and flexible too. plenty of google and you tube fixes for this and that. as Mono says, take a week if you have time.
my own problem basically was that microsoft is getting intrusive on privacy and control. that is not a bad thing nedessarily, Macs were always different and many preferred them. it is like google, you either accept the advantages with the intrusion, or you have to learn to 'root' in an entirely unAustralian sense and take control.
for myself and many that have privacy, security and control concerns, the only way is Linux. so before you take that week on win10, i would suggest you dual boot (that means safely install alongside) a Linux dustro. they, distros, are all varied to suit your purpose as they start from open source code. linux today is very usable and covers all but the mist highly evolved and specialist software. so yiu can load up a trial linux designed for ex windows users quite safely and try it.
it is pretty much a given that this is a personal computer and smartphone age and more and more synchronised and interconnected. you dont survive unless you take the time to learn the basics. it is a skill like driving a car, you could do without it but few do.
what i would suggest for you and others in your position of lack of knowledge is that rather than a week on win10, do invest a weekend or a few evenings on reading up on linux distros and maybe some basic stuff on win 10. analogy is you cant always lift the hood/bonnet and fix it, but you do need to know how to drive and hopefully change a tyre/tire.