We need a specialist in refining sites in the project

The site is already made itself, just needs refinements.
a website selling.

1. 1) You need to do a search on the site by category.
2) Also that he not only found the name but also the manufacturer and categories

2. 1) On the site and in a certain category of goods there is an instruction to them
2) You need to make sure that the instruction can be downloaded by making a module.