Wa alaykum assalam,
Firstly, welcome to Islam, you are now part of the beautiful community of Muslims, alhamdulillah.
Gaining knowledge is so important and a life-long effort, and I know from personal experience it can be quite bewildering on where to start.
I'd say learn about Tawhid, the oneness of Allah swt, and read the biography of the Prophet Muhammad (peace be upon him).
Then you could start with the six articles of faith, and learn about your primary duties detailed in the five pillars of Islam (atm I think salah would be important).
This is a wonderful website which has the core beliefs of Islam described and explained really well:
http://www.islamreligion.com/
IslamicBoard isn't too bad either, lol, if you have any questions just ask inshaAllah.