I remember studying A Levels at a FE college and deciding to go to uni. I had no family support. I did huge amounts of online research but all the lists and tables were overwhelming. I tried to create some kind of meta spreadsheet listing and comparing all the ones I was interested in but I couldn’t make it work and couldn’t see the wood for the trees. The lecturers all parroted the line that all universities and university courses were created equal and a first from Oxford Brookes is equal to a first from Oxford (for example).
I was so stressed by it all I considered not going.
Finally my (foreign - Danish) maths lecturer took pity on me. He said look let me boil this down for you:
- old universities are more prestigious and prestige = employability. Therefore Oxford (v old) much better than Oxford Brookes (new). This is true all over the world - Harvard and Yale are a couple of the oldest American unis for example and incredibly prestigious.
- degree courses described with one word (Physics, Philosophy) are more prestigious than longer ones
- if you go to a prestigious uni you’ll mix with people from a wide range of privileged backgrounds and that will help you work out what career you might like (for example, what ‘working in the city’ - my vague idea for a future, actually means in terms of job title and employers)
This did give me some erroneous ideas (for a long time I thought PPE was a bit Mickey Mouse, ha) but it gave me some grounding in guessing what course to go for. Because ultimately I think he was right - if you don’t have a career in mind, prestige is the big deal.
I didn’t have a career in mind because I had no fucking clue what careers were available. The adults I knew were, on the whole, fucked up. Or they were teachers. I didn’t even know advertising was a field, I thought company bosses wrote their own adverts 
I know there’s a lot of information around but processing it is hard. Anyone who thinks it isn’t probably already has an internal automatic filter that they aren’t acknowledging doing some of the work for them.