1 yr after asylym granted you can apply for GC. Timeline 6-8 months. Mine was nearly 6
4 yrs after GC granted you can apply for citizenship. Haven't done it yet... but trend seems to be the same as for GC.
There are people who have been very very helpful to asylum seekers and asylees. Many of you know Jason Dzubow, who writes the blog asylumist.com and Dr Kate Sugarman, a medical dr who helps asylum seekers tremendously. They are organizing a refugee ball in Washington DC on Jan 17, 2017. I strongly encourage all to attend and those who are capable please make donations to this cause, these are selfless people working for people like you and me. Donation Link: