So about a month ago as I ran into an issue with my 2006 GS500 where it just would not start. The first thing I checked was the oil level, which was very low so I replaced the oil and still no luck. When I am in first gear on the bike it moves forward a decent bit while trying to start it. Here is a video link of what the bike does in neutral when trying to start it up:
Any suggestions on what I should do/try next would be highly appreciated!

Use Neutral, Charge the battery.......fresh fuel??

Next.....

EDIT: Welcome to the forum!! 

Definitely the battery is too weak to start the bike.  How old is it? how long has it been sitting? ...

Fully charge the battery,if it doesn't start then i'm guessing it's cactus.