As above really, tubeless ready wheels don't come with the correct rim tape in my experience. The most cost effective and easiest solution for first time installation is to buy a tubeless conversion kit that has everything you need in one. Caffelatex by Effetto Mariposa is a particularly good one for road bikes:
https://www.effettomariposa.eu/en/products/caffelatex-tubeless-kit/
Stans is another good company for tubeless kits and I'm sure folk here have other recomendations.
Some top tips from my experience, first set up the tape and valves, then mount the tire. Then
without sealant inflate the tire to seat it onto the rim. Hopefully you'll be lucky and it will go up first time, otherwise you made need a compressor or a track pump with an air tank to give it the boost it needs to seat.
Then leave the tire for a good while, still without sealant, to check it's properly sealed and the valve is correctly inserted. Generally, the tire should stay inflated without the need for sealant.
Then my preference is to deflate the tire, remove the valve core and then inject the required amount of sealant through the valve. With tubeless tires, if they have properly seated into the bead of the rim, then they will not unseat themselves when the tire is deflated.
You can also pop sealant into the tire before you seat it onto the rim, but that can get a bit messy and I prefer to stay well clear.
Some photos from setting up my wheels: