Learning to ride on a 400 cc

I’m a 5’7 M 75kg 23 year old. I have never ridden a bike or even a bicycle in my life ( tried a 150cc bike in open fields) I just got my first job and I have to travel almost 30 km daily(12-15km up and down) , metro is very crowded so I’m thinking about buying a bike. This bike will be my one and only bike purchase of my my life that’s why I want to go for a bike that is learnable and can be enjoyed afterwards. In some reviews i read they said SPEED 400 is good for beginners. Is it true ?? Please guide me my budget is 3 lakhs for the bike +20k for the gear Also give me some tips to learn to ride Thank you