Guys!! Need help!

So i just found out I’m officially pregnant with my #2 child. I had my Son in June he will be one in exactly one month from today! And I’m due around the end of December/January. & I really really want to breastfeed for longer then a month this time! I cried for weeks when I couldn’t anymore with my son. (Dried up and he was losing weight) so this time I really wanna make sure I do Everything I can to make it happen! I need tips and ways to make it easier on me. How can I store up breasts milk and make sure I always have some on hand. & any tips on handling two under two lol!! I’m pregnant oh my goodness!!!