GI Bill benefits were set up to help pay for college, graduate school and training programs for Veterans and their family members who qualify to cover all or some of the costs for school or training.
Have you ever applied for GI Bill benefits?
I have and was awarded Post-9/11 GI Bill education benefits.
Since you were awarded Post-9/11 GI Bill education benefits you GI Bill Statement of Benefits will show you how much of your benefits you've used and how much you have left to use. I suggest you view  your GI Bill Statement of Benefits.
Is there a way that I can apply for benefits online?
Yes you can use the GI Bill Comparison Tool to apply for education benefits.
Over and above the GI Bill benefits are there any other GI Bill programs available?
Absolutely, there is the Montgomery GI Bill Active Duty (MGIB-AD) you might be able to apply for. If you served at least 2 years on active duty you might qualify for this benefit.
Who can apply for Post-9/11 GI Bill benefits?
If you need help paying for school or job training and you have served on active duty after September 10, 2001 you might qualify for education benefits through the Post-9/11 GI Bill.
What other benefits are available under the GI Bill program.