In that case I would buy the basics. L&P, tips, primer, nail plate cleanser, files, UV topcoat. Many use the NSI Glaze n Go topcoat.
You are better off watching an Acrylic video here on Nail Angel and take note of what is used from start to finish.
You will also need acetone for removal.
I’m not a gel person so can’t really recommend a system to use but I know the Nail Angel Team will recommend their system.
I would concentrate on perfecting a good enhancement first. I see so many go straight in with the art work, 3D flowers etc before they can produce a good nail. Once you have got that right and feel confident move on to the next step. A decent basic enhancement is key to a happy client.