Monday's Boston Marathon — the first since last year's deadly finish-line bombings — is getting underway right now.  36,000 runners will run the course under much tighter security than the event usually has. And, with quite a few more anticipated spectators, both locally and afar, drawn in part by the anniversary of last year's tragic events. So if you're one of many looking to follow along with the race, here's a primer on getting started.  

Where can I watch the Boston Marathon online? 

There are a few options for those looking for a livestream of the race. For New Englanders, CBS's local affiliate has a livestream of the event available here. If you're out of the region, however, you're not out of luck. The organization behind the Boston Marathon will start up its own worldwide livestream at 9:30 a.m., when the elite women start their race. It's not embeddable, but you can click here to access that stream. NBC's Universal Sports is also carrying the race nationwide. 

What time does the race start and end? 

The Boston Marathon starts different waves of runners at different times. Here's the schedule: 

Mobility Impaired 8:50 a.m.
Push Rim Wheelchair 9:17 a.m.
Handcycles 9:22 a.m.
Elite Women 9:32 a.m.
Elite Men and Wave One: 10:00 a.m.
Wave Two 10:25 a.m.
Wave Three 11:00 a.m.
Wave Four 11:25 a.m.

The Boston Marathon attracts some of the world's best runners. Elite marathoners can complete the 26.2 mile run in a little over two hours. But finish line coverage will go into the afternoon. 

What's different about security this year? 

We've gone into some of the changes in more detail here. But essentially, the entire route will have a lot more security present, and marathoners and spectators will be limited in what they can take with them to the scene of the race. The new rules also seek to stop a longstanding Boston tradition of "bandit" running the race. "Bandits" simply jump onto the course from the crowd at some point and run without paying the registration fee. Traditional, but unofficial "military ruck-marchers and cyclists" won't be allowed to participate this year, either. 

What's the route? 

The Boston Marathon begins in Hopkinton, Massachusetts, just outside of Boston and ends on Boylston Street in the middle of the city.