Subscriptions and bookmarks are an easy way to keep track of forums or topics that you are most interested in. Subscriptions can be used for specific forums or topics and grant you the ability to be notified by email whenever an update to that forum/topic is made. Bookmarks on the other hand, are simply place keepers that you can return to at a later time.
To add a subscription, you must first be in the forum/topic you would like to subscribe. Once you are there, you will see a small button on the bottom right hand corner of the screen called: "Subscribe Forum/Topic". Once you click that, your subscription will be confirmed and you will be redirected back to the last forum you were at. If you would like to bookmark a topic or post, it is the same procedure except you click on the button that reads: "Bookmark Topic".
You can view your subscriptions or your bookmarks in the "User Control Panel" on the top right of the screen. Once in the UCP, you can click on "Manage Subscriptions" to view your currently watched forums or topics. If any forum or topic that you see in this list is updated (ie new post), then you will be receiving an email from CrashForum.info to notify you. Note: you can create "Daily/Weekly/Monthly Digests" by checking out the informational topic on this forum.