Reactjs is the current hot, and its developed and open sourced by facebook. Its being adopted hugely by developers around the world. If you love meteor, you could be happy adding react to your stack With the release of Meteor 1.3, Reactjs is having a great support, and its the right time to get started in combining your meteorjs skills with reactjs.
Meteor 1.3 have also open new possibilities through introducing the support for npm packages.
Lets get start creating a meteor app.
meteor create reactmeteorapp
Change to meteor project directory
cd reactmeteorapp
Add npm support to the project directory
npm init
Install react and dependencies through npm
npm install --save react react-dom react-mounter
Install needed meteor Atmosphere packages
meteor add kadira:flow-router ultimatejs:tracker-react
Now you have got the basics needed to get started playing around React and Meteor.