I have thoroughly gone over our budget. It is something I do regularly, to tweak it, see where our money leaks are etc...
To create our budget all I did was list all our expense in an excel column, then in the next column I listed how much everything is each fortnight. I chose fortnightly because that is when we get paid.
I gathered previous bills for electricity and water etc... then worked out how much they cost in the previous year and divided by 26. It did take a little while to work it all out, but once it was done I was surprised at all the areas we could save in.
My list of expenses looks like this
Now, for me, the only things I can't currently save on are my tithing, mortgage, land rates, car rego and rent. Everything else can be reduced.
My budget is not complex like others I know. It is basic and easy. And since I am not very computer savvy, it works for me.
To start with, when doing your own budget, a lot of people track their expenses first to see how much different things cost them. To do this effectively you need to do it over 3 months and write down EVERYTHING! It will really shock you how much money gets wasted.
Tracking your spending is a good idea, even just to review your budget if you already have one.