My grand father learned piano at 72 - so you can definitely get started with doing it now!

Below are best sites, resources to learn piano online in his humble opinion.

BEST 3 FREE AND PAID PIANO COURSES ONLINE:

=>1. LearnPianoIn30Days

LearnPianoIn30Days is a 30-day online piano lessons program instructed by singer and songwriter, Rachel James, who has got many years of piano playing on the scene, club around the world. She wants to share her experience as well as her piano playing skills for anyone who has the passion of piano.
Details:
Rated: 4.5* by 9600+ students
+ Online learning method: monthly membership site.
+ Free trial in 14 days
+ Refund policy: 60-Day Money-Back Guarantee
For more details, pls click here: LearnPianoIn30Days online course

=>2. PianoForAll

Details:
Rated: 4.6 by 16,000+ students
+ 138,203 students enrolled
+ Total time: 10 hours on-demand video
Here are detail: PianoForAll online course on Udemy

=>3. Free course on YouTube: Andrew Furmanczyk channel


This is a series of lessons that teach you how to play piano for yourself RIGHT from the VERY beginner all the way to the late intermediate/ early advanced stage of piano. These lessons have been RESHOT and these are the new lessons.
Here are the playlist: Learn How To Play Piano (NEW) - YouTube
=>AND BELOW ARE TOP 13 PIANO BOOKS ON AMAZON:
1) Adult All-In-1 Course: Level 1
2) Alfred’s Basic Piano Course for Adults
3) Piano Scales, Lessons with Elements of Basic Music Theory
4) Adult Piano Adventures All-in-One Piano Course Book 1
5) Modern Course for the Piano
6) John Thompson’s Easiest Piano Course
7) Alfred’s Self-Teaching Adult Piano Course
8) Primer Level – Lesson Book: Piano Adventures
9) Level 1 – Lesson Book: Piano Adventures
10) KP1B – Bastien Piano for Adults, 1 Book Only: A Beginning Course
11) Piano and Keyboard All-in-One for Dummies
12) Suzuki Piano School New International Edition Piano Book and CD, Volume 1
13) Piano Book for Adult Beginners

The key to learning anything is practice with the right coach. Happy to have another pianist to be in the house. It's definitely not easy to pick up but with dedication and discipline, it can be

Plan to buy a keyboard/piano for my little daughter too. Budget around 3k

You know the instrument well. So you can easily learn if you really want to.

The things parents do for their kid, during renovation my wife already plan for an area of the house to dedicated to a grand piano for my daughter... thing is.. she havent even started any piano lesson