well. topic is huge, but if you start from microstakes then play tight (there are many tight open ranges on internet, just find them if you know nothing about cash games), don't bluff much on micro cause people don't fold much, and valuebet them hard. Don't use bet sizes like 50-60% for value. Bet big like 80-90%. If they want to call you, they will. Bets size don't matter for them. Just play easy game , don't combine too much and focus on weak players. You don't need to play reg wars on microstakes. So table selection is important thing too.
Yes I play cash games sometimes. I spend 100$ or 200$ two times montly.Iwin 1.500$ last year and I was really proud of myself.I like to play cash games but I don´t recomend because it is really dangerous and you can spend almost all of your money.