Need some recommendations as a beginner please!

Hi, I’m just getting back into the hobby after loving collecting cards when I was younger. I’ve been looking at a few sets to focus on and crown zenith really appeals to me. However, I’m finding it really difficult to find any crown zenith products anywhere (I’ve been looking to find sea + sky boxes, ETB’s etc. and either can’t find any or they are about 5x above original price)

I was just wondering if anybody had any advice on where the best place online to find products is… I’m in the UK for reference.

OR, if maybe crown zenith isn’t the best set to start out with? If so any advice as to where I should start and what sets are best would be really appreciated.

Thank you so much if you’ve read all of this and thank you in advance for any advice :) I’m really excited to get back into this hobby.