I'm working as a web developer and I want to be able to determine if I'm efficient.

Does this include the how long it take to accomplish tasks such as:

• Server side code for the site logic with one language or multiple php,asp,asp.net.
• Client side code like javascript with jquery for ajax, menus and other interactivity
• Page layout, html, css (color, fonts (but I have no artistic sense!))
• The needs of the site and how it will work (planning)

How can i judge how long it will take to complete a website?

The site has CMS for adding and editing news, products, articles on the experience of the company. Also, they can edit team work, add Recreational Activities and a logo gallery with compressed psd download, and send messages to cpanel and to email.

You are starting from scratch except JQuery and PHPmailer.

How can I estimate how long the job will take, and how can I calculate the required time to finish any new projects?

I'm so sorry for many scattered questions, but I'm in my first experiment and I want to take benefits from the great experience of those who have it.