about spanish some call me different how to use between aperitivo and el vermú

Please,help for my practice I don't get seldom it . Can you help me for check and explain it.

Please check my sentense I have one brother. In spanish is "Tengo uno hermano" it right?

How i can use verbo correct Hola! I'm thai. I'm 18 years old. I really interesting english and spanish language.But my language skills are poor.