I keep all of the links I post in a notepad document. Actually its in an APP called evernote, so I have access to it on my phone and also on the PC. Other than 'subscribing' to a thread the site does not have a 'favorites' list.
I was just going to suggest subscribing to posts that you want to keep close. I've done it to posts id like to go back to also for future reference. I just looked at my subscribed tab and for some reason it seems that anytime I've responded in a post it automatically subscribes me to the thread. I need to check why. I use tapatalk app for this forum. I use my phone to surf here. I also let's me post pictures so much easier than through the web page itself. It also has a participated tab where all my posts are. Hmm.