Link In Profile provides a landing page where all your Instagram linkable posts reside. 

Step 1. In this example my user name in Instagram is barb2090 so the link in profile landing page address is https://linkinprofile.com/barb2090  This is the page you want to direct your followers to.

Step 2. Add your landing page address to Instagram. Click Edit Profile on your Instagram page or head over to https://www.instagram.com/accounts/edit/ and paste your link in profile landing page address where it asks for website. 

Step 3. You may want to add a phrase under your bio that says something catchy like "Click the Link Below" or "Shop the Post by Clicking Here" which will direct your followers to your landing page.

Step 4. Start adding a weblink to your content in your Instagram post captions (see below). Remember it must be in the caption.

OR add the link on your dashboard under Links. Your dashboard address is https://linkinprofile.com/dashboard