First and most important: Don’t take stock market advice from random people on the internet. If you don’t know why you’re buying something, you probably shouldn’t be buying it.
Second: What do you want to achieve?
Some general (maybe eye roll questions but whatever) questions:
-Are you planning on living off your investment in the near future (and if so, via dividends or selling positions etc.)
-You sure you won’t need that money in at least the next 5 years? For how long do you plan to set that money aside?
-Any high-interest debts?
-Can you tolerate volatility in the markets?
-Is it important that your investments have to be liquid?
-How are the taxes on the asset classes? (how are dividends taxed versus capital gains etc. in your country, assuming UK but could be a different country)
Third: Educate yourself on investing in general.
For definitions, I recommend using https://www.investopedia.com/.
I recommend you to read this visualisation of decades of stock market research by Oppenheimer Funds, https://cdn2.hubspot.net/hubfs/3994374/Oranj_November2018/PDF/Compelling_Wealth_Management_Conversations.pdf
Inside you find some common myths about the stock market (Is the Market Really Like a Casino? Missing Even the 10 Best Days in the Market Reduced Returns by Almost 50% in the Last 20 Years etc. its a must-read if you are starting with investing).
If you’re a visual learner: Plain Bagel (more beginner-friendly) and Ben Felix on youtube.
You should also read as much about investing as possible.
I could recommend you some papers but I’m probably the only one who likes reading those.
In general for starters: go with low expense ratio broad markets ETFs. Try to get your emotions in check. (If you want more info: How much have you invested?).
I hope this would get you some more structure in staring with investing. Feel free to ask any questions.