You've found a member whose content is just your cup of tea, why not follow them and notified of their posts!
Navigate to the profile of the member who you want to follow and press follow – it's a simple as that!
(You will need to have push notifications enabled on your own profile to use this feature)
If you later decide that you no longer want to follow a member, then simply navigate back to their profile and tap following. This will instantly remove your follow.
Following is different to connecting & messaging – you can learn more about this here.