is it possible to link from one page to a Section with an ID from another page.
Yes you can your link should be like /about#intro here About is the page and #intro is ID of a section on that page.
By the way, before posting any question you should search in the forum. You may find some of your questions asked and solves already, so you can find the answer fast.
where do you write that info in section,page,link etc