@JamesP728 If this is your 1st home then I would open up a Lifetime ISA and stick 4k into that. This will get you an extra 1K with the gov contribution. It's literally money for nothing but must be used on your house or pension.
The investing part really depends on your risk appetite
@JackTrading212 As you're only 2 months in, you maybe haven't experienced a really red day/week yet. When it comes, and it will, keep cool. If in doubt, zoom out π. Good luck!