We need to optimize our Google advertising campaign and improve our SEO

We are a small company selling an innovative phone and tablet accessory. We sell through our web shop to customers all around the world.

This is our website - www.thenoduscollection.com

We are product designers and we are not familiar with the best ways of advertising through the internet. We have set up Facebook and Google advertising and would like some input from an expert who can help us to optimize our advertising campaigns.

On top of this, we also do not know much about SEO and our website has not been optimized for this.

We would like to hear how you can help us. If you are interested then I am happy to message you more details about our company and the products that we are selling.

Thanks
Jack