Hola, Is the same as the previous question. If you are starting to learn Spanish I recommend you to use first Sustantivo + Adjetivo, later you can start to change the position and see what happens in each case. The position of the adjective can change the meaning (But not necessarily). "Ella es una escritora mala" (She is a bad writer or she is a mean writer, depending on the context) "Ella es una mala escritora" (You emphasize the adjective but the meaning is only "bad") Adiós

Hola, yes, normally in Spanish the adjective goes after the noun, that's what you should learn at the beginning. Although is possible to use it before the noun, but yes, it matters. Sometimes the position of the adjective can change the meaning like "El libro grande" and "El gran libro". In your example "Ella es una buena cantante", you put the adjective first to emphasize it. "buena" is the important word in the sentence. Adiós

In my opinion no.
"Saber" should sound with B not with V. But is true, for most of us (incorrectly) B and V is the same sound. We all have many accents and bad language habits, thats why you may hear "Saver", but is "Saber" with B. 

Hola Adam, "en absoluto" es similar a "para nada". Significa (no) en absoluto. En inglés lo puedes pensar como "absolutely not". Adiós amigo

Te entiendo Nasib. El subjuntivo es de lo más difícil de entender y dominar. Al principio no lo necesitas, pero poco a poco que lo aprendas (Subjuntivo) entenderás su belleza. Que lo estudies (Subjuntivo) o no, depende de ti. Nosotros lo usamos todo el tiempo. Ánimo!