There are many different reading plans available online...since everyone is different, the best thing to do it look at options available that best suit YOU. Some are chronological, you can pick one for for those new to reading the Bible, reading plans with devotionals, multiple languages are available...you get the picture. Below are a few websites that offer Bible reading plans, but feel free to Google your way to the reading plan that's right for you!
(There are hundreds of apps for your smart phone or tablet as well...check out the app store on your device.) The reading plan that you pick is not as important as actually USING it on a regular basis! So don't let picking the right plan overwhelm you...just get into God's Word everyday!