Okay, so some of you might already know this and some don't.
If you already know, you can leave this post since there is nothing new.
Now, for the rest of you.
Just put these two words at the end of topic link, then whenever you will use this updated link you will start from where you left.
".new#new"
Suppose, this is the link of topic,
https://bitcointalk.org/index.php?topic=2110712.0After editing the link, it will look like this.
https://bitcointalk.org/index.php?topic=2110712.new#new Bookmark this new updated link and use it, everytime you open it you will start from where you left.
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My explanation skills are crap, so if you have any questions feel free to comment.