I'm a 25 year old with approximately £14k in savings and am completely new to investing. I'm also quite risk averse as I'm doing PhD and will be for the next three years, so can't really afford to lose my limited savings. I'm thinking about investing in an index fund, (maybe a global one?) as I understand they're a safe bet. I was wondering though, does anyone have any good sources for sensible investment advice for a begginer? Things like what I should be considering when picking one and how to assess whether they're a good or bad pick. How much should I invest? How do I actually find a fund?
I am acutely aware that the world is full of bullshit artists and morons so I need to be careful where I get my advice from. I personally don't really know anyone who knows about this stuff.
Edit: The reason I'm considering investing now, is because of Brexit. I'm worried that my savings which are all primarly in Pounds Sterling will be worth considerably less in a few months time if Britains exit from the EU does not go well.