There’s not going to be a one site fits all option. Search for what you want to know, find various sources and vette them. The Internet has never just had the answers. Someone looking to learn something has always had to do some work. If you want specs about thinkpads, go to Lenovo. If you want opinions about what thinkpads are a good value, then you have to watch videos or read forums of people’s opinions. You just have to put in the work, just likes it’s always been.