How to Create Hyperlink text in Word Press

Hi guys, i’m trying to add a hyperlink text to my wordpress website on my products, when i land on a product near the purchase button, i have added a link there which says, “also available at” and i want to add a hyperlink text which would then lead a customer to an external website where they can also purchase the product.

I have included the name of the website stores where they are available, but my challenge is getting them to be hyper link text. i used the <a href= and it does make it a hyperlink text, however it includes my website url and then adds the link address i put in thereby giving me an error when i click on the product.

Please assist me in getting it to remove my website url and that it only takes the link i have put in.
@AlfredoRamos1 @alexcohn @b