Brace yourself. You may not ever want to go back to work! You will get involved in their schools and not want them in after care. You will ENJOY being at home. However, if you cannot imagine life without work or cannot manage on one salary you have to stay current with technology as it changes so quickly it will make your head spin.
You can plug into community college courses/online courses to stay updated on different computer programs etc.
If there is a professional association, keep going to meetings so your face is out there. For instance, the film community has Texas Association of Film Tape Professionals, the graphic designers and photographers have DSVC ( Dallas Society of Visual Communications).
If you have the opportunity to do some consulting from home or to even do a couple of hours while your child is napping, keep your hand in that way. It's a lot easier to keep one oar in the water than go into dry dock for years!
Now, fun, Geeze, where to start. The Dart Train is your best friend. When your child is walking you can take the train to Union Station and let them run through the underground tunnel to the Hyatt, then ride the escalator up to the coffee shop, refuel and head back to the train. WEARS them out!
Get a membership at the Science Place in Fair Park. There is an indoor sandbox and when it is rainy or so hot you can't imagine being outdoors, it is a life saver.
Get a bike and an attachment for the kiddo and bike around the lake, you will stay in shape and they will have a blast.
The Dallas Arboretum has activities for little ones on certain mornings, check that out.
The central library downtown is wonderful place. They have morning readings in the kids area and puppet shows, all sorts of things.
Daily expenses.Keep a daily record of every single penny you spend for a month. Then you can go back and figure out where you can cut back. Your coffee is better than Starbucks any day! Pick up Dave Ramseys book at the library and follow his advice.
Enjoy your "mom" time. They grow up faster than you are ever prepared for.