Poder or Conseguir - which to chose.

I had this question today.  Found a usefu response online. 

http://www.italki.com/question/199837

'Poder' as a verb means be able to/ can do something. 

'Conseguir' means achieve, obtain, get what you want. 

Almost same meaning, but "conseguir" is used for when you want something deeply and it is deeper than 'poder'. If you have a goal, you want to obtain it, make it true. "Poder" is for common things, "conseguir" for importants things.

Poder.
- Eu posso falar agora que todos estão ouvindo.
I can speak now everybody is listening.
- Eu posso fazer esse trabalho sozinho, mas prefiro pedir ajuda.
I can do this work alone, but I prefer asking for help.

Conseguir.
-Eu consigo conversar com minha namorada agora, ela está mais calma.
I can talk to mu girlfriend now, she is calmer.
- Eu consigo aprender o que quero.
I can/ am able to learn what I want.