If you are newbie in buying laptop first you should get some important information about the company/brand that are leading. Then set a budget range to buy and select all good reviewed laptops from all those brand.
Then decide the purpose of buying a new laptop like for use of productivity, gaming or streaming etc. Then compare specifications and choose the specs with latest generation because even if you choose powerful cpu with old version it will be slow compared to latest version. For ex if you are choosing i5 processor 3rd or 4th gen then you should consider buying a i3 with 9th gen which will be well optimized for your daily usage. I hope this solves the confusion in getting your latest piece of tech, furthur if you have any doubt or any specific questions you can message me , I will be happy to answer.
Thank you