Some advice from an investing nerd:
1 - Start investing ASAP. The younger the better
2 - Set a monthly budget which you will invest regardless of 'how the market is doing'
3 - If your employer offers a pension % match, make sure you're maxing it out
4 - Avoid actively managed funds (there are numerous studies indicating they rarely outperform the market - especially after considering costs)
5 - Unless you have no-clue and tons of money, avoid financial advisors (DO YOUR OWN RESEARCH or ask for help on various forums)
6 - Picking individual stocks is essentially gambling, use diversified index funds
7 - Avoid commodities, currencies (especially crypto-currencies) or anything else that has no intrinsic value (watches, wine, dutch bulbs, website domains, collectables)
8 - Ignore the market. Don't panic when your stocks drop, don't alter your investments, just continue to plod along and keep investing - selling in a crash is the real-life version of jumping off a cliff because all your friends are doing it.