Hey there, definately you can add reviews of your customers to your homepage as well as to your product page, for this you can use best and good apps from the shopify app store such as Product reviews app which is given by shopify itself or you can use a good third party app such as Ali Reviews or Judge me product reviews .
As well as, I would like to suggest you to try a good shopify landing page builder such as Layoubase https://apps.shopify.com/layoutbase-pagebuilder
which can help you and make your work easy and handy without any coding, It is a drag & drop page builder. Thanks