Cables from tuner to amplifier and speaker

Pictures of the back of each device will help mightely here

Nice turntable. I've not seen one in the flesh, so I'd assume it's phono level output, so you would connect the perwired cables to the phono jacks on the amp. You'll need an additional set of RCA cables to connect the tuner to the amp (output on the radio goes to Tuner on the amp).

For the speakers, they would be connected from the A row of the amplifier - a black and red pair to each of the speakers. Just use .75 two core electric flex (because it's cheap) just to make sure everything works - you can spend more on more expensive cable later if you want.

Any electrical shop will have them, such as DID or PowerCity. Don't spend more than a tenner on them for now, you're just trying to make sure that everything works first

https://www.harveynorman.ie/tvs-headphones/tv-and-audio-accessories/tv-cables/g-and-bl-audio-cable-2rca-1m.html