Pubg mobile is a mobile game that can run smoothly in more than 4 gb ram devices. If you are planning to play pubg mobile in less than 4 gb ram device you will suffer a lot while playing. It gives you irritation while you are playing because of the lags. So if you really want to play pubg mobile smoothly you will have to need a good device.
when you install the game you will need to login to your social account or play as a guest. I would prefer you to login in in a social account because if you login in in social accounts your game progress will be saved and you don need to be worried about your game data if you play in another devices in the future.
some available social accounts that you can connect are facebook, twitter and google play account.
In my experience if you connect to your google play account I felt lower lags than other socail media accounts. You think this is nonsense, believe me once try connecting to your google play account you wont feel much lag in the game.
After you loged in to your account you will need to play one training game in Erangel map. There are total of 2 map as of now Erangle and Miramar. The next map Sanhok is going to come in the game. You can play War games, Arcade games to learn the mechanism of the game. The both maps are of 8x8 map which means they are big maps and sanhok will be of 4x4 map.
In the main game there will be real player as well as bots which will make a game balanced. if you get all real players then it will be too hard for you to play and similarly if there is no player, all bots then also it will be too easier. so there are real players and bots to make a game balanced.
The rank system is similar to other games. lowest rank is Bronze whereas Highest rank is Conqueror. In the lower ranks you will get many bots as compared to higher ranks. You can even play custom games with your friends in any map you want. You will need a room card that is free to get by collecting clan points. One room card costs around 300 clan points.
You can set up your control by your self. You can also adjust you sensitivity. If you like to play 4 finger then you can master any guns recoil easily. Also there is Gyroscope feaure available in the game which will help to control recoil.