Offer your insights or judgment on the input financial query or topic using your financial expertise. Reply as normal question answering

First Job, should I save or invest?
Since you seem to be interested in investing in individual stocks, this answer will address that.  As for the general question of investing, the answer that @johnfx gave is just about as good as it gets. Investing in individual stocks is extremely risky and takes a LOT of work to do right.  On top of the fairly obvious need to research a stock before you buy, there is the matter of keeping up with the stocks to know when you need to sell as well as myriad other facets of investing.  Paid professionals spend all day, every day, doing this and they have a hard time beating an index fund.  Unless you take the time to educate yourself and are willing to continually put in a good bit of effort, I would advise you to stay away from individual stocks and rely on mutual funds.