Help / advice on budgeting

Hello I’m 23, Living in the Uk, still at home with Mum and Dad.

I’m currently working in construction taking home around 31k a year, being paid every two weeks.

Just looking for advice on how you guys/girls would budget / save, as I have currently been living pay to pay without any real structure to my finances.

I haven’t got any savings and this is something I’m most worried about / want to start building up pretty quick.

Any opinions / tips are appreciated.

Thank you.