Focus on growth or dividends for a 18 yr old

Right, so I’ve recently turned 18 and therefore have been able to open a brokerage account.

So, I have an initial investment of about £1,300 and will be able to invest around £250 a month. My main question here is should I focus more on growth i.e just invest in S&P 500 or should I invest in more dividend focused ETFs/stocks. Perhaps a bit of both?

As you can tell I’m not entirely educated on the subject so any help would be appreciated