Dive summary: 

• Mashable has put together a list of over 50 worthwhile events for professionals in online marketing, social media, public relations, and other related industries. 
• Users can sort the list by date added and watch YouTube videos of previous years to help decide which events are worth attending. 
• Many events listed offer up discounts to Mashable readers. 

From the article: 

"You can sort listings by when they were added, get discount codes for Mashable readers and maybe even see a YouTube video of a past event so you'll know what to expect. You can also subscribe to the events newsletter or follow our events account on Twitter so you'll catch the best events before they sell out."