Shop and Newsletter sections

Goodmorning, I should insert 2 sections on the Home page (site: www.piterseil.com): - a Shop, where I can put the merch and premium packages, with paypal or credit card payment (protected). For the merch, I have to include this store: https://teespring.com/it/stores/piter-seil-shop , while for the premium packages I have to directly create a showcase on the site. - A form mail for the newsletter, with invitation text above Furthermore, At the bottom of the site I would like to leave only the words "Copyright c 2021 Piter Seil. All right reserved", without references to the theme. Thanks