Buy and sell for yourself as realtor

[Gina Qing]

Hello, I am a soon to-be realtor, and also looking to buy and sell properties actively. If I buy properties for myself, do I earn commission as a buyer representative (for myself) and if the commission % is up to myself to decide when I make an offer? I suppose the answer would be "yes", I'd like to get some insights (e.g. what % commission if at all) from experienced realtors on this. 

Would that be the same for selling my own properties representing myself in terms of commission and its percentage? 

Thank you very much for your insights!

Best,