Edit Shopify template

Using free Shopify theme 1. Want to add section where i can add text under collections also (same as i can add on top of the collection), so i can add above and under collections. 2. On the home page, i have collection list, its header will also link to the collection it self 3. With same look as "Featured Collection" I can add 2 more sections: - Most Bought Products - Can check from what collections the products be shown there) + change the section title, this be the product that most bought in last 30 days. - New Product - - Can check from what collections the products be shown there) + change the section title, here be the latest products i added (not edited) 4. Same sections that i can add to home page, i could also to regular pages (with same change as in 2 and 3).