So as you are aware it's always been very difficult to link out to things from Instagram. The only live link you have is in your profile and for the rest of the time you pretty much have to direct people there.
The only change to that is once you got 10,000 followers you could use a swipe-up and link out to places from your stories. So you could then send people to your products, blog posts, affiliate links (correctly marked as such) etc.
Drumroll Please
Well the good news is that you can now add a live link to your stories, sending people wherever you wish. This is a game changer in terms of driving traffic and it's definitely something to take advantage of.
Just to show you where this feature is I've made a quick video. Hope it helps and any questions feel free to ask in the comments.