Change some things of our worpress e.commerce website.

I need to add and correct some things about our site [login to view URL] I need yo add a TickBox so you can create an account during checkout, this is already tick in woocommerce but it doesn't appear in the checkout. I need to add the TickBox of "Terms and conditions" during checkout, there is not information about this in my woocommerce so i don't know how to place it. I need to add a "Menu" word when you open the web in mobile so people know that the Button for MENU is a menu button. I need to place a smaller resolution when you open the website. I need to make images in the "GRID" of products, biggers, the box where is the product is okay, but the image have to be bigger and have to be 3 products per line. This are tinny changes that a peorson who understand can be corrected in minutes, so if somebody know to solve it it will be grat. Regards