Shopify Slider and Font Adjustment

I need help with two key tasks for my Shopify store:

Make the home page slider responsive on mobile devices and tablets.
Change the font style across the site (headings, body text, navigation menu) to match a specific font style I provide.

Ideal skills and experience:
- Proficiency in Shopify
- Experience with responsive design
- Strong typography and font integration skills

Please ensure that the work is seamless and retains the aesthetic of my store.