Hello.
im new to the bitcoin world and i have some questions.
i know they were probably asked before but there is so much to read (i did read) and so much info its hard to keep track. and my english is not so good so...

1. is there a straight foreword guide that i can learn from?
2. what is the current value of the bitcoin in dollars?
3. is it a good investment to buy bitcoins, let the value rise and then sell them?
4. do you use it to trade/buy/sell or as a way to make money?
5. i didnt fully understand the mining thing.

ill keep reading and i hope you can answer me. 
thanks.