Just chill a bit decaff...
Enjoy your new found freedom. Who needs routine now!
Clean little and often, as and when you're in the mood - that way there's never a huge amount to be done and it doesn't become a big chore.
Home learning...? Having their mama to play with, read with, go to the park with, just being with will be enough at this age.
££ - that's just something you and dh will work out. Whatever you feel comfortable with. (I have a pension income so can't advise on this, never had to deal with it).
Organisation and routine - whatever you decide it to be. If you fancy a duvet day (for all of you) you can do it now. If you want to organise trips out, you can do it now. Leisurely lunches, afternoon naps, shopping when shops are relatively quiet. It's all yours now!
What I really would advise though, if you havn't done already, is seek out other mums in similar situations either through toddler groups or things like that. It's always nice to have a bunch of buddies to do things with.
Enjoy your time with your children. You'll never get this time again and I'm so sure you wont regret it.