1. Past Performance of buying and selling crude oil
2. expert guidance in reselling.
3. influence of money exchange.

mathivel 

1. Past Performance of buying and selling crude oil 2. expert guidance in reselling. 3. influence of money exchange.

It seems you are very new to crude oil ?

1. Who's or what performance do you want to analyse ?
- if you want to analyse your own performance, your trading platform
will provide you insight on your performance, your broker might also
provide you additional metrics/statistics
- if you are looking on the market in general, you might going through
a number of quantitative data sites
- if you are looking at any other performance, it depends on what you
are looking for

2. Can you elaborate on what you exactly understand on 'reselling' ?

3. You can look at correlation between CL and E6 an other currencies
you will see some correlation. The CL future trades is trading in the
US$ currency.