If it's been a while since you last rode, it's best to start again with a beginner-style board to get back into the groove of things. Opt for something a bit wider to increase your stability, and make sure you remember the safety gear to keep you protected if you do take a tumble. When in doubt, explain your situation to your local skate shop, and they'll be more than happy to point you in the right direction and kit you out with the ideal gear.