Top keyboard recommendation for beginners:
Yamaha P125
https://amzn.to/2yZophe
(88, Weighted Keys, Standard Sounds, Standard Ports)
This is a great keyboard for a beginner and also a great keyboard to grow into. It's also a great value for what you're getting.

Less expensive version of the P125:
Yamaha P45
http://amzn.to/2zLeg9d
This is the cheaper version of the Yamaha P125. The big difference are the buttons. Less dedicated buttons to choose different sounds.

Best Live Performance Keyboard Nord Electro 5
►73 Keys Weighted Version: http://amzn.to/2jxqVXh
►73 Keys Semiweighted Version: http://amzn.to/2yLKY7a

Nord's are considered one of the best live performance keyboards. Watch pop artists perform live on television. More times than not you'll see the signature red Nord keyboards. They have all the necessary ports, tons of sounds and effects, and they're very lightweight.