Budgeting

For furniture try freecycle.com.

I don't. My budgeting process is:

Will I be poor before payday if I buy this?
If yes, don't buy it pay day if you need it or save for it if you don't.
If no, buy it.

Probably because I have a fortunate living arrangement just now but bills and food are about 25% of my income so about 25% goes towards fun and the rest goes to savings.